upload a forum database

ive been messing around with this for 2 days now, i need to upload a mybb database.

MyBB being as it is alows you to backup your database not install it - for security reasons apparantly, so im trying to do it though mysql admin or whatever its called, but the file limit is about 3 times less than the database, the database is in gzip format so is as small as can be, can anyone help - or even better...do it for me as im realllllllly P'd off with it, i swear once ive converted it from mybb to smf i will never EVER look at mybb.