oneearth

hi folks, this is my first post after creating an unattended cd with nlite and installing over an existing partition with programs on it. the result was a working xp system with no extra programs installed. i didn't format the partition and it left a windows.0 directory. i don't quite get how to get wpi to work, so unattended program install is a later step. however, if i list the program files directory, i see all the old programs left from the previous install. is there a way that i can somehow get back/re-access those old programs? i can get registry backup of the old system with the programs but don't know what to save/export. thx