The best way to contact other users are the forums. To get a more extensive help you can also Get Support with other resources.
The available forums are:
AdvanceMAME | Help for the AdvanceMAME and AdvanceMESS emulators (advmame/advmess). |
AdvanceMENU | Help for the AdvanceMENU frontend (advmenu). |
AdvanceCOMP | Help for the AdvanceCOMP recompression utilities (advpng/advmng/advdef). |
AdvanceSCAN | Help for the AdvanceSCAN roms manager (advscan). |
All the forums accept anonymous posts and allow anonymous search of the archives. If you register a SourceForge account you can also be notified of new messages.