strange folders

[214hay]

running windows XP SP3.
I recently received a pop up warning that I was about to download some malicious material. Unable to get out of it I switched the computer off.
I have now noticed some strange folders when I go to, My computer- C-Windows, There are 5 folders marked in blue (spuninst)  $NTUninstallKB956083$ with the last three digits different in each folder. Could this have anything to do with the recent warning? are they necessary or can I delete them?
They may have always been there but I have only just noticed them. am I being over cautious. How can I find out if they are necessary.
Thank you in anticipation.

[kuszmania9999]

Hi there, this gonna be much faster if you do as the link says..

http://www.computerhope.com/forum/index.php/topic,46313.0.html

[214hay]

Thank you K9 I will do it when I have got a spare half hour.  Did not realise I may be in so much trouble. Thank you.

[BC_Programmer]

those folders have nothing to do with malware and contain uninstall information for service packs and fixes installed on your PC.

However visiting the malware section can't hurt