Can I know what"s going on with pending requests?

Hi,
We have a web site that gets to 100% on one of our 8 CPUs and the used
memory (including page file) goes up to 20.6GB... We want to know which
process or which page is using all these resources... Is there a built-in
way?

Our site uses IIS 6.0 and ASP.NET 2.0

Thanks

ThunderMusic