Love potion #9
Anyways, I wont reply to your email, but I will here.
Active desktop only fails if there has been a major failure with explorer (crash of explorer or a program that causes major problems)
Sounds like MAME or whatever ROMs you are using are corrupted and are causing major problems. Or even more likely you have an OS issue (hence the loss of active desktop).
Either that, or you are trying to get people to email you to send spam....