Bankroll Guidelines?

[lahlahlah]

[img]/images/graemlins/confused.gif[/img] i'm just starting out at limit holdem and was wondering if i am playing over my bankroll... i have 850 or so on FT and have been playing 6 handed or less 1/2 limit and some 2/4 hu

i know there are a variety of suggested bankroll #'s to abide by but what did any of you guys employ when first playing limit

thanks