About Mystic Jade theme.

[ColdXX]

Hello.
I was wondering if i can change only the text on the logo

can someone tell me how to do it?

Thanks.

[IchBin™]

Read through the support topic for that theme here:
http://www.simplemachines.org/community/index.php?topic=198950.0

If you can't find your answer then you should ask the author in that topic because it is likely he can help you with his theme.