Vista - Users Files problem with Documents...

hey all,

its hard to explain in the title but this is the problem. normally when you install vista you get under users files all those folders like documents downloads music video etc. well the thing was when i installed it i moved those folders to different drives because, i dont have enough space on the C drive when i store stuff on it.
so ya i right clicked - properties - move - and selected another drive i.e D drive
but then i changed the letter of my drive that i moved my documents folder too now it doesnt show up anymore.
so my question is how do i get it to show up besides switching the drive letter back.

cuz im having problems installing stuff because i dont have a documents folder there. im trying to install itunes but it said cannot locate documents so it just cancels the installation.

i would be very greatful if somebody could help me.

thanks
-s

is it possible to get them back?