[Herts] internal ip and websever... joy!

[James Pink]

hi all,

recently i decided to use an old pc which i had lying about as a 
websever, set eveerything up, it's running gentoo and working very well 
indeed. there is one problem though, this machine sits inside the 
network and is not the machine which is used to route the internet. 
what i need to know is how i tell the computer which connects to the 
internet to redirect html request to the websever which has an internal 
ip. the machine which connects to the net is running xp(not mine it's 
my mums)

not really i linux question i know but i thought that you guys might be 
a able to help.

thanks in advance
PINKSTER