I may not understand the issue. Are you saying that PENETCFG can't find the NIC? If that's the case, try searching the posts at the BartPE forum: http://www.911cd.net/forums//index.php?showforum=30
or post your own query there. I've never posted there 'cause I've always found the answers to my questions are already there.

Alternatively, you can check out what the folks at http://www.ubcd4win.com/ are doing. The "Ultimate BootCD for Windows" is based on BartPE, so it's useful to check both places.

Warning- UBCD4Win tries too hard to make things "idiot proof". The result is that something always needs a little tweaking to make everything work. Be sure to read the "News" section on the web site to find pointers to the tweaks that need to be applied to the current release.

Sorry I can't be more help.

ron