Server sizing

Hi,

I'm developping an app over jsf, andi need to know aprox what should be the size for the server for 15 users at the same time, since i've notice my developing is just not being enough with a 2.8 ghz processor. the server will run jboss 4.0.5 and jsf imp 1.1

what i would like to know ishow to meassure the minimum size for this server. if i'm in the wrong forum please redirect me

[422 byte] By [iapazminoa] at [2007-11-15]