get firefox and throw the rest away, except ie, cuz u need that to dl important windows updates. other than that tho, everything else is garbage compared to firefox The Truth Behind IE
yeah dont resort to Internet Explorer, it automaticly instals stupid spyware on your computer. if you have ie i am sure you know this. Things like making your homepage a stupid ass search engine looking thing or the first time you put in a new URL it will say, not found are you looking for same url with link click that and it works type a thing, all spyware. plus popups and it will kill your computer from the amount of spyware trust me if your whole computer is slow get a spyware remover remove it all then download FireFox 1.0 if the instalation doesn't work for the 1.0 they also have 0.9 and 0.8, i have all three.
i use firefox but keep IE incase i need it, some sites dont work well in FF and you need IE for windows update