Windows Vista Upgrades, installations, and file transfers can be a tricky if your system does not meet certain criteria.  Here is a link to the systems requirement for Windows Vista.

http://support.microsoft.com/kb/919183

Devices such as printers, camera's, and scanners may not work if a driver is not compatible with Vista. Devices that use serial connections must also be looked at carefully before upgrading to Windows Vista.

In addition many laptops and pc's that meet Vista's minimum requirements will be horribly slow unless certain functionalities of Vista that are not needed are disabled.

Please follow the links below to find out if your computer and devices are ready to make the jump to Windows Vista.