I installed Vista on a separate HD (it was actually S: in XP) and of course in Vista that drive is C:, taking the place of my XP drive, as is to be expected.
But I had tons of programs (iTunes, Opera, Trillian, Office...) installed on the same drive and partition as XP, and now they all don't...
compatibility
configuration
drive change
hard drive
itunes
legacy software
office
opera
partition
programs
reinstall
settings
systemupgrade
technical support
trillian
windows vista