CPU Utilisation

Dear All

we have zenith entry level server(PIII-650 Mhz,10 GB SCSI HDD, INTEL 440BX mbd, 256 MB RAM), We have IIS & sql server running in our server and we have around 15 users, throught the day they will feed the data (like customer name,phone no, address etc) to sql.

Now my problem is our server is dam slow, and our CPU utilisation is always 100%. Our page file size is 512MB. I am really surprised y CPU utilisation is always 100%, becoz i have stopped unnecessary services. Only 2 major application is running, (IIS and SQL). We have around 706 mb free disk space in our boot partision.

Kindly help us to speed up the server performance.

Thanks in advance

Sakthi