I have been looking for info on how to aggregate 2 ore 3 NIC's into into one big pipe. Any advice would be appreciated.
-Chuck
For Solaris 7 or earlier, look at Sun Trunking software. Make sure your switch is compatible with Sun Trunking software. If you are running Solaris 8 10/00 or later, you can use IP multi-pathing which is built into the kernel. Look at http://www.sun.com/docs and search for IP multi-pathing.
More advanced IP routing software with allow you to load balance across multiple network interfaces. As I recall, there are also configuration switches in the Linux kernel to permit this.
I also think (but can't remember, it's been so long) that gated routing software will load balance cross multiple interfaces. However, gated is appears to be commerical now.....
But lots of older freeware versions abound!
http://rpmfind.net/linux/rpm2html/search.php?query=gated
Thanks for the good info 
Are you going to be doing any performance test with base and after results? That would be interesting.