Oh yes, I understood...
But "Total Uninstall" is my favourite friend in the hard disk here... I think it is a lot better than System Restore... I use the older 2.35 version (FREEWARE!!!)...
It controls the whole system (registry and hard disk C

before and after an installation (single or group... but I always use with single installations...)... and saves all the differences in a file.
If you need to remove an application or action, just let it open the file and undo all the changes.
For example, I always make this system image before letting some primitive/barbaric/rudimental friend use the computer... In case of system damage... I restore all...
A few weeks ago I left from here for some days, and once come back the wi-fi antenna was unable to work: no surfing!
I found installed 2 applications... (some video players and codec packs...)... (some friends used the PC in my absence): I removed the apps and it immediately recognized again the antenna!
X BLACKMIRROR:
Thank you too! But I didn't make any change in the hardware... I re-formatted the hard disk and re-installed Windows from a SP2 slipstreamed disc... it goes great!
If you are interested anyway this is the hardware:
Athlon XP 2000+ (1250 MHz)
MB SIS K7S6A
1 GB RAM (512 MB 266 MHz + 256 MB 333 MHz + 256 MB 333 MHz)
Svga AGP GeForce4 MX 440 - vram 64 MB
Controller:
Primary Master:
HD 1: Maxtor 80 GB PATA133
(part. 1 = 20 GB: WinXP + apps / part. 2 = 4 GB: OS and browsers TEMP folders / part. 3 = 56 GB: free)
Primary Slave: Pioneer DVD-RW
Secondary Master:
HD 2: Maxtor 320 GB PATA133 (write cache disabled)
(part. 1 = 10 GB: Windows SWAP file / part. 2 = ~ 300 GB: DATA)
Secondary Slave:
HD 3: Maxtor 60 GB PATA133 (or 100, I don't remember):
(older Windows installation... but sometimes it made some "clicks" and system blocked... so I disabled it in System preferences...).
Monitor: Waitec Shining 15t LCD 15".
Thank you!