You will need to submit a Request for Change of Program or Place of Training, VA Form 22-1995. The form can be completed online.  I can give you a link to VA Form 22-1995
I'd like to ask you another question about educational benefits. I heard about another Bill, something 9/11-related, am I correct?
You're not wrong. You're talking about the Post 9/11 GI Bill. That program will equally help you to pay for school or job training, having served on active duty after September 10,2001.
And what kind of benefits are in that Bill?