When I install a printer over the network it does not install the drivers. I have to manually point the install the drivers. It then pulls the drivers from the file and installs the printers. THen on first use it ask for the drivers again. On a right-click to properties it ask for the drivers as well.
THis is a recent server migration as well:
Old Server was a 2003 32x
New Server is 2008 64x
PCs are mixed XP32, XP64, 764 (Issue on all OS)