How to set up a quickbooks POS system?

I need to set up a pos system. We have an office and a separate retail location.
What is the difference between using quickbooks pos and this: http://www.merchantexpress.com/quickbooks-merchant-account.htm?

both of the application do the same thing why do you want both?
you can set up different location and items in these application there is not need to have both unless you just want to it extra work.

Intuit QuickBooks Point of Sale: Integration with Intuit Merchant Services

Quickbooks Pro 2010 MAC $198.95 Easily manage your business on a Mac. Let QuickBooks help your business be more profitable. Organize your finances, track money going in and out of your business, and spot areas where you can save. Stay on top of it all with important information all in one place. Create invoices, pay bills, and manage expenses Gain insight into your business with over 100 reports Access key data fast with Customer and Vendor Centers Easy to learn and use Built for the Mac OS Looks and works like you’d expect Easily Manage Your Business on a Mac Save time completing everyday tasks like tracking and managing expenses, invoicing, and printing checks. Process your payroll right within QuickBooks using Intuit QuickBooks Payroll for Mac. 13 Save money and time by processing card transactions directly through QuickBooks for Mac with Intuit Merchant Service for QuickBooks for Mac. Stay organized, accurate and on top of your business. From the Home Page to the Customer, Vendor, and Transaction Centers to the Company Snapshot, QuickBooks for Mac makes it easy to access what you need, when you need it. QuickBooks also lets you choose from over 100 standard reports to see where your business stands. And it supports both Web Connect and Direct Connect, making it easy to quickly import downloaded bank and credit card transactions from participating financial institutions into QuickBooks. Customize QuickBooks to meet your unique needs. Personalize forms, like estimates, invoices, statements and more, by adding logos, images, and fonts with Layout Designer. Customize your toolbar to access key tasks in a single click. Exclusively for Mac. Work on the platform you prefer and get the most out of your Mac — sync your contacts with Address Book 16 back up files to your MobileMe account, and add reminders directly to iCal. 18 Easily share your data with your accountant or other Windows based users. QuickBooks 2010 for Mac requires Mac OS X v 10.5.7, 10.6, or later. Easy to setup, learn and use With the interactive Tutorial Center, Guide Me, New Company Setup Assistant, and onscreen help.

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Intuit QuickBooks 2008 Pro $185.99 Software Application Integration: Preparing letters requires Word 2000, 2002, 2003 or 2007 Exporting reports requires Excel 2000, 2002, 2003 or 2007 Contact Synchronization with Outlook requires Outlook 2000, 2002, 2003 or 2007 Synchronization with Outlook requires QuickBooks Contact Sync for Outlook Compatible with QuickBooks Customer Manager V2.0 and later, and QuickBooks Client Manager v2.0 and later Compatible with QuickBooks Point of Sale v4.0 and later Business Planner functionality requires Adobe Acrobat Reader 5.0 and later CD-ROM Standard Complete Product 403697 www.intuit.com Small business accounting software that makes accounting easy with tools to organize your finances all in one place. PC Customize for your Business: Create 100+ customizable reports, like Profit & Loss Statements and sales reports, in two clicks Save Time on everyday Task: Easily print checks, pay bills, and track expenses; set due date reminders Quickly create estimates and invoices Send estimates, invoices, and reports directly from QuickBooks using Outlook or Outlook Express Download credit card and bank transactions Stay Organize and on Top of your Business: Organize data in one place with Customer, Vendor, and Employee Centers Track sales, sales taxes, and customer payments Track employee time and expenses to bill clients Easily export or enter data into TurboTax, or send to your accountant Efficiently Manage Employees and Contract Workers: Manage payroll and payroll taxes; offer Direct Deposit (subscription required) Prepare and print 1099s & 1096s for contract workers and federal filing Manage Products, Services and Inventory: Track inventory, set reorder points, and create purchase orders Flexibility to work the way you want: Export company data to Excel spreadsheets Create letters with Word using customer data Create and customize professional-looking forms Allow your accountant to review data & make changes while you work Easily map and obtain directions to your saved customer, vendor and employee addresses – right from within QuickBooks! Other tools to meet your Business needs: Print checks and forms directly from QuickBooks to keep better, more accurate records while also saving time Save time by accepting all major credit cards and debit cards with QuickBooks Merchant Services Keep track of your inventory and customer information while you ring up sales Quickly capture billable hours online and from Outlook Calendar Find industry-specific software that works with QuickBooks 1 User Intuit, Inc QuickBooks 2008 Pro Retail QuickBooks 2008 Pro – Complete Product Financial Management Processor: 1.8GHz process

Merchant $30.66 Merchant

The Merchant $25.5 The Merchant