Need help with programs on old HDD

Ok so i just built my new computer. Included was a new harddrive. I didnt really wanna re download my games and i wanted to have my itunes music and stuff. So i decided to put in my old hard drive from before that i firstly installed all my stuff on. But for some reason i cant access my files. I go into my old harddrive (E) and when i click the itunes application to run it, a get errors. I decide to try play some call of duty 4 that i installed last year on my old hard drive. So i go into the files from my HDD and click iw3mp.app to run the mp. Now im getting weird errors that i havent gotten before.

I cant reinstall the games from the disk because my DvD drive isnt reading my DvD's, only CD's. How can i fix these?

Any one?

To actually run programs from that HDD you will need to boot into the version of windows that on it.

OK cuz on my old pc i had vista 32 bit. How do i get it to work on my new pc with a 30 day trial win 7?

bump, does it also have to be the same version? my old hdd was 32 vista, now on my newest harddrive its win 7 64. So would i have to get vista 32 bit or could i get vista 64 and it iwll still work.

ok so how would i download itunes and be able to transfer my songs, shows, moives, and games to the new hdd?