Dear Will, I don't know if you will have any problems upgrading to Snow Leopard from Tiger, but before you do I would make sure you meet the "System Requirements" for Snow Leopard. The primary system requirement is that your Mac uses an Intel processor. When you open the Apple menu on your computer the first menu item either says "About This Mac" or "About this Computer". Either way you should open the menu item and see if you have an Intel processor. The Mac's which use non-Intel processors are limited to Tiger Best Regards, robert Nelson . > > Click on the link below to go to our homepage. > http://www.icanworkthisthing.com > > Manage your subscription by using the web interface on the link below. > //www.freelists.org/list/macvoiceover > > Users can subscribe to this list by sending email to > macvoiceover-request@xxxxxxxxxxxxx > with 'subscribe' in the Subject field OR by logging into the Web > interface at //www.freelists.org/list/macvoiceover >