Punctuation?

[Shannacore]

This is pretty minor, but does anyone know why I can't use certain punctuation marks? I know theres a couple, but the major one coming to mind is apostrophes.

Halp! I like me some good grammar!

[Rogean]

http://www.project1999.org/forums/showthread.php?t=4553

[Shannacore]

Doh,

Thanks Rogean!