SmartSource coupons can be printed from these operating systems: Windows XP Vista Macs running OSX 10.4 (Tiger), 10.5 (Leopard), and 10.6 (Snow Leopard) While we are in the process of being certified for OSX 10.7 (Lion), most Lion users have not experienced any issues. We currently have partial support for the Windows 7 OS.  We are aware of a few restrictions and are working to be fully compatible shortly. We support these browsers:  Internet Explorer 6.0 and higher Firefox below version 3.5. We are working on adding 3.5 compatibility. Safari Chrome AOL (but not through AOL dial-up) Windows 2000, CompuServe, Linux and WebTV systems are not supported. We do not support printing using the AOL browser via AOL's dial-up service. However, you can use IE or Firefox if AOL is your ISP. We currently have partial support for the Windows 7 OS.  We are aware of a few restrictions and are working to be fully compatible shortly. You must have Java version 1.5 or above installed. With Firefox 3.6 you must have Java version 1.6 or greater. You must have a working printer connected to your computer. SmartSource coupons cannot be saved electronically to your desktop for printing sometime later or somewhere else. Your printer must be able to produce at a resolution of 300-dpi. Lower resolutions or draft-mode settings will not produce coupons legible enough and may result in a printer error, or be unable to scan at the checkout. Please note: Computers in corporate environments or public access places often have firewalls that can prevent users from downloading our Coupon Printer.