Critics pretty much ripped LINDSAY LOHAN to shreds for her performance in the Lifetime movie "Liz & Dick".  But that doesn't matter to her . . . because she wants her own sitcom now.
 
Apparently, CHARLIE SHEEN put that bug in her ear when they did "Scary Movie 5" together.  A source says he told her it would be, quote, "an easy way to make very good money and help her to get her movie career back on track."
 
Supposedly, she wants to do a sitcom based on her own life. (Ha Ha)
 
As for the haters, a source says, quote, "Lindsay isn't fazed at all by the criticism.  She thinks everyone is insanely jealous of her, and like it or not, she was trending on Twitter [Sunday] night."