Hi. i want to throw a 18th birthday party. i am on a limited budget. the age range of the party will be 16-20?

Hi. i want to throw a 18th birthday party. i am on a limited budget. the age range of the party will be 16-20 and i want to have music. i need good places with lots of room but on the cheep side in the Berkeley Oakland area. please help me...my party will be on january 30th. 2010