I did this at my last place, we had LA Broadband and had a Be* Internet line dedicated for IT and other services, put a PIX firewall in and just pointed our default gateway on same subnet too it, boom! worked!
Vacancies (as of 29th November 2010) at Baylis Court School, a multi-cultural Foundation secondary school for girls in Slough, Berks - is that the job?!
That's been advertised for months!
try and get your self some 0.25 patch cables, make the job easier when the cabs are tidy and too work around.
We have to get them made specially though.