Thanks for starting this thread, good stuff!
I'd been wondering if I'm eligible for MGIB. If I read this right, I'm not (too old and/or too stupid - didn't sign up when I -maybe- could have). I found that out by reading this pamphlet after searching for awhile on the website you linked above:
http://www.gibill.va.gov/pamphlets/C...0_Pamphlet.pdf
... which made my brain hurt, but may do some of you some good. Bottom line appears to be - apply and let the VA decide.
P3pilot - Higher Power's 737 type rating is listed if you search for eligible programs, but I think Spongebob's answer is the way to go.