I just installed MCP2 on a Dell Inspiron 8600 and the installation work out without any problem. The audio worked out using the UniAudio drivers and to support the graphics I'm using the SNAP drivers. Only flaw regarding the graphics is that SNAP don't support accellerated gfx on the nVidia mobile chip and as well the 8600 has a 15.4" widescreen 1680x1050 resolution. I'm getting 1400x1050, but I can live with that. I ordered the 8600 with the Intel miniPCI 2100 wireless lan (no clue about the Dell offered wireless nic if they work or not under os2) and there is no support for this board (yet, at least). So I'm currently trying out using a LinkSys WPC-11 v4 wireless card; should work out since there are some early betas. The BroadCom 4401 integrated NIC has no support either... typical since the 57xx serias has drivers from BroadCom... USB works without any problem.
To sum up, if I can get the NIC to work via wireless, I'm happy and we could add the Dell Inspiron 8600 to the list of hardware that works with OS2.
I'll let you know when I've managed to get the WPC-11 card to work.