Have a small issue with 'plitting' the traffic because we don't use static ip's.
I don't use static Ip's either that would make me go nutz, but I do however make reservations to groups of computers, and that is how I assign the groups to either use main uplink or secondary. DCHP reservations in server 08 now is extremely easy also, just a right click and reserve... glad microsoft actually made a tiny difference there..lol
Glad I could help ya!