DHCP/Fixed IP issue
 

Just re-installed XP ( for usual reasons)

But can't get things set up same as before, and it was such a long time ago I can't remember exactly how I did it.

Have Ntl modem, WRT54G router(192.168.1.1), 1 desktop via cat5 to router, 'n' laptops via wireless
only thing that has changed today is re-install of XP on desktop,

The problem is to do with desktop PC but only if I try to operate it with a fixed IP rather than DHCP

I want to do this so that WRT54G Port Range forwarding settings can always point at the desktop.

Router is set to generate IPs from 192.168.1.101 up
If I set desktop network connection, IP protocol to "obtain IP address automatically" then its OK - the desktop PC has an internet connnection
settings shown in ipconfig are as follows
192.168.1.10x
255.255.255.0
192.168.1.1

But I want to operate the desktop as 192.168.1.100, so I set XP network connection IP protocol to "use the following address and set it as follows
192.168.1.100
255.255.255.0
192.168.1.1

But then I get no internet access ?

Prior to the XP rebuild, I had it working so that IP was fixed at .100 and I've not changed anything on router

Any suggestions please

---------- Post added at 18:11 ---------- Previous post was at 18:06 ----------

Its ok sorted,
didn''t notice when setting IP to use specific IP, it also forces you to enter DNS ip's
Once put those is all sweetness and light