Linksys WRT54G -Need forwarding...

Using Linksys to do "port forwarding" to my 3 pc's.

I only have the possibility of doing 10 port forwards.
Well, if you allow ntp (port 123} for 3 PC's, then port 80
and a few others for web cams etc you suddenly have no free
port forwarding entries available...

I seem to be deleting and adding the most important ones all the time.

Surely we can do more than 10 ?
What am I missing here...

Also if I want port 123 for all 3 pc's why don't they aloow
a range such as 100-102 for one entry...

Thks.