Ok y'all, I guess I'm clueless....or maybe I need to run a different version of MAMEWAH.
Technically, no, you don't have to upgrade MAMEWAH, but MAMEWAH .97 didn't know anything about the new MAME option -listxml or how MAME got rid of the -listinfo option (which MAMEWAH used to generate the game list). If you want to stick to the old version of MAMEWAH you have to jump through a few more hoops to get an updated game list:
1) Go to Start -> Run
2) Type 'cmd' and click OK
3) Navigate to your MAME folder using the 'cd' command (ex. cd \emulators\mame)
4) type: mame -listxml|xml2info>mame92.dat
5) In MAMEWAH, specify this new dat file (c:\emulators\mame\mame92.dat in this example) and that your list generation is dat file vs rom folder
6) re-run list generation
sab