Please help me if you know about anti viruses and trojans?

it has been a couple of days that my computer acting wierd. when i am on the internet suddenly it starts opening pages (internet explorer or firefox) and start open the pages about anti viruses and it says your computer is inflected by viruse and trojans and.....

i dont know what i should do because my internet is so slow to and is getting slower.

i downloaded couple of trojans (anti trojans ) the thing is that i can see that i have viruses but when i want to delete or remove them by that specific program it asks me to purchase.

is there any help that i can get to fix my computer.?

thank you

Please help me if you know about anti viruses and trojans?anti virus protection

sounds like a high jacker this is a add ware problem and if you download Spy Bot S7D it should get rid of it download it freeware from softpedia.com

Please help me if you know about anti viruses and trojans?antivirus

ur computer is really infected by spyware/adwares/malwares, these spyware and adwares r used by web masters to advertise thier website using trojans, dont b worried, u can easily get rid of spywares and adwraes by using any free spyware removal or adware killer tools, u can download them from the google website, below i have wrote a link of google website search that will help u download free spyware removal tool