routing for 1000 users and 10Mbit internet.

[hugle]

Hello all.
I run into some problem here
Let's take, that I have 10mbit internet and 1000 users behind the
router.
All I want to do is to NAT internet over all of these users
give some users external IPs (BIMAP in ipfilter)
And olso do traffic shaping, like:
Some IP groups (10.0.0.0/24) one pipe   -> 100kbits
some IP groups (10.0.1.0/24 and 10.0.2.0/24) another pipe.. -> 300 kbits for example
some individual IPs individual pipes, like 10.10.10.10 has 400kbits

The question in what machine do i need?
What CPU and how much of ram ?
dual or single processor ?
or maybe there are any better suggestions ?

thanks

-- 
Best regards,Hugle