I took the GMAT five times (1 cancelled reported scores because I got sick) in the past in the years 2006-2008 but none of those have scored higher than 550

, so I gave up

. Years past but my current career is going anywhere now, so I really, really want to try again. I have also somewhat figured out what went wrong in the past 4 times - I just couldn't do well in the test center. I scored over 600 when I was practicing at home. I am working on a study plan, strategy and ways to calm myself down when writing in test centers. The big question is, if I take it again (5th time), how will the Admissions of MBA school evaluate me? Although they were 4-5 years ago. If, and I say IF I can smoke it this time, will they still accept me? By the way, I reside in Toronto, Canada, so I am applying Canadian MBA schools.
Thanks to those who are willing to share their experience.
Regards,
K