I have windows xp and recently i'm getting windows installer popups and i don't know how t

i am having windows xp from the starting.i'm in eleventh so i don't know all that pro stuffs.every time i click an application a windows installer popup appears and slows down the application.we have four accounts in our computer.first these popups appeared only in the other three accounts( which my sister can access)then i deleted my account and created a new one and the popups started to appear in mine too.i tried add/remove programs but it did'nt work.i tried regedit and deleted the windows installer but still no use.and i don't have an OS cd either.the man who came to install it in my pc took it with him and my system is running really slow now.and another big problem is that "your system may be at risk" popup(it says your product code is not valid)and it started to come when i installed internet explorer 7.some one please help me. i'll be really greatfull to you if you do.

I have windows xp and recently i'm getting windows installer popups and i don't know how to get rid of it helpmicrosoft office 2003

sounds like spyware to me, get and install adaware (see below for link) and run it.

hopefully that will help , if not feel free to email me directly with additional details and I will see if I can help you

dougc

I have windows xp and recently i'm getting windows installer popups and i don't know how to get rid of it helpwindows xp professional internet explorer

Hunt down the man that took your OS cd. It has a product number on it, that you need to "validate" your copy of XP.