Well, If some program does not get uninstalled, I would normally 1.delete all the files corresponding to that program and also its registry values and then
2.I would install it again and then uninstall it again to remove any remaining values and files.
Step 2 is necessary only for antivirus programs.
P4 1.6GHZ Willamette core 400MHZ FSB 256KB L2 cache
Intel 845WN Mobo
Nvidia Riva Tnt2 M64 G-card
40GB Seagate 5400rpm HDD
15 LG Studioworks563N
Creative Inspire2400 2.1 speakers
16x DVD ROM
52x Samsung CD Burner