The colour problems with the WMV file could be either, a broken/missing codec (quite possible as it works perfectly on another machine) or broken/outdated video drivers (I have problems whenever new drivers are released & only when new drivers are released). Grab a copy of GSpot it'll tell you which codec your wmv file needs & whether you have it installed.

The Frame skipping in Photoshop could be any of loads of things, your processor being too slow, not enough Ram, fragmented hard drive, video drivers, pagefile damaged, missing or too small, display properties colour being set too low (I've had it drop to 8bit before).

Windows 7 64Bit
Poser Pro 2010 SR1