They really are two seperate programs. You can exchange files across an Excel spreadsheet (if you have MacOffice) but not to my knowledge, directly with Windows.
QUOTE
System Hardware and Software Requirements
Recommended System Configuration
* Computer: Macintosh with G4, G5 or Intel Core processor
* Operating System: Mac 0S X v10.4.7
* Memory: 256 MB installed RAM
* Hard Disk Space: At least 100 MB of free disk space
* Monitor: Color monitor with 1280x854 minimum resolution and millions of colors
Minimum System Requirements
* Computer: Macintosh with G3, G4, G5 or Intel Core processor
* Operating System: Mac 0S X v10.4.7
* Memory: 256 MB installed RAM
* Hard Disk Space: At least 100 MB of free disk space
* Monitor: Color monitor with at least 1024x768 minimum resolution and millions of colors
* Printer: 100% Macintosh-compatible printer, if you plan to print invoices, checks, deposit slips, lists, purchase orders, mailing labels, reports or graphs
* Checks: Use Intuit Checks if you plan to print checks. Canadian Image Ready Cheques are not supported.
Minimum System Requirements
* Excel integration requires Microsoft® Excel X or 2004 for Mac
* E-mail requires Apple Mail® 1.3.11 or 2.0.7; Microsoft® Entourage® X or 2004 for Mac; or Eudora® 6.2.3
* Backup to .Mac requires paid .Mac account available separately from Apple Computer, Inc.
* iCal and Address Book are included in Mac OS X from Apple Computer, Inc.
* Requires QuickBooks Payroll for Mac , powered by PayCycle, Inc. Additional fees apply. Internet access required. Adobe Reader is required to print checks and forms. Terms subject to change. Service not available in Canada. You can also choose to use Aatrix Top Pay (software not included). Optional service. Features differ. Fees apply. EIN required. Internet access may be required for certain features. Terms subject to change.
Download Requirements
You must have all three of the following to download QuickBooks:
* A high-speed Internet connection (DSL, cable modem, or higher)
* Safari 2.0 or higher
* 2.5 GB free disk space
After installing QuickBooks, you can delete the installations program from your computer to free up disk space. The QuickBooks Pro and Premier installers give you the option to auto-delete those files. Choose that option to free up disk space immediately.
Important: Customers with dial-up connections cannot download QuickBooks, due to the large file size.
http://quickbooks.intuit.com/product/accou...s_req#tabAnchor