I cant install/uninstall programs that runs with the windows installer package. I tried searching the internet but it doesnt help. Also tried reinstalling it but it doesn't do anything different.

Anyone can help me with this problem?

Ill be willing to give some TC for anyone who can give me a solution that can solve this problem

PC spec
AMD Athlon 64 X2 Dual
Core Processor 5200+
2.71 GHz, 1.75 GB of RAM
OS
Microsoft Windows XP Professional
Version 2002
Service Pack 3
Windows Installer Package
Version 4.5