@ wasay_ahmed,
Sir; look closely on the banners you are receiving. It doesnt say "Ads by Google" anywhere!!
- Its an adware that is causing you this trouble. I suggest you download FireFox and use it instead of IE6. FireFox has less vulnerabilities then IE6 and gives you a much much improved and safer Internet experience. Alternatively, you can buy any Anti-EVERYTHING Suite and Run it on your system and "Hope" it helps you in removing these banners.
@ All and @ Everyone!
If it doesn't say "Ads by Google"; and they are VERY objectionable; you probably have an Adware issue and it does not have anything to do with PakWheels.com Administration being lazy. The fault is not at there side, its actually at yours!
Happy Browsing!