CGI Total request 100%

I host a few sites for customers using PHP.
When I monitor the sites with the Win2k AS performance monitor I see under web service that the total CGI requests for these sites are always a 100%
I followed MS advice to control the CPU time allocated by IIS for these events but they are still 100%.
Anybody has any idea or gone through this before on how to keep this under 100% ?

My hardware is 1 CPU PIII 1.3 GHZ w/512 MB Ram and 60GB HDD.

thanks

 

 

 

 

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