Hey Zrizz,
Barre F right? I have been working on it for a long time. I still don't have it down. Here's some tricks I've heard tho.
Get the big knuckle of your barre finger out in front of the strings and keep it even with your middle knuckle.
Pull with your fretting arm instead of squeezing with your hand. You'll have to pull your guitar into your body with your strumming arm to keep it still.
Try to roll your finger on it's side a little so it stays straight. If you try to play it flat your knuckles bend.
Try holding your guitar in a more classical style. Tilt the neck up so it gets your hand in a better position.
PRACTICE PRACTICE PRACTICE
That's the stuff I've heard and am trying.
Check out Justinguitar.com he has some good tips and lessons on it.
Keep Rockin!!!!!!!!