Apache optimization for Xeon 2.8, 1GB RAM

[zurih]

Hi

I'm just going to finish configuring my server.
I wonder what can I change to optimize apache for my hardware needs (httpd.conf)

My specs (HP ProLiant 140 G2):

Intel Xeon 2.8 Mhz
1GB DDR2-PC3200
80GB HD

The server is issued to be a web hosting server with lots of user accounts who are using static & dynamic web pages.

Will appreciate any suggestions, including maybe hardware upgrade suggestions.

Thanks!