OSX repeating black screen

hey guys, I just installed OSX and vista on the same hard drive but on different partitions. :??

vista being on the disk0s1 partition and osx on disk0s2

but when I select to boot from OSX I get a black screen then a few seconds later I'm back at the vista boot loader. I have to press F8 during the black screen to enter startup options then manually select OSX. It's pretty annoying. I saw this problem in the troubleshooting page and was wondering if there was a solution. Searched around and didn't find one.

On a side note, is it possible to have my computer automatically load OSX by skipping the vista boot loader?

--thanks for everyone's contributions and work towards easybcd