CCIE Lab IOS Feature Set? [7:66304]

I am in the process of putting together a CCIE practice lab. I have a bunch of 2500 routers with varying memory. I know the lab uses 12.1 but my question is what feature set do I need? Will IP do what I need or do I need IP Plus, or even Enterprise. Since IPX is gone will just the basic IP image do

Connecting WIC-1DSU? [7:61487]

Is it possible to connect a WIC-1DSU-T1 to another WIC-1DSU-T1 to simulate a circuit? I have two 2600's that I would like to connect to do some testing with. If it is possible, do I need a special cable? Thanks in advance, Mike Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=61