if you cant beat microstakes you need to do some serious analysis of your game to figure out why you aren't. i dont know how you play at all, but if i had to take a guess of things you arent doing:

1.bet/bet/bet with your good hands. and make real bets, not that half pot crap on the flop. never slow play.
2. probably bluffing too much vs. shitty players. almost never bluff shitty players.
3. why are you trying to stack the nits? you should be trying to stack the 50/5's and there are plenty of them at microstakes.