To desileoheart:
Your question about pat-time MBA can not be answered unless you specify where you currently live. Part-time MBA programs require you to attend classes 2-3 times a week on campus, depending on how the program is structured and if it allows you to choose your workload. So you will have to come to campus a few times a week, therefore your choices will be limited by the area where you live. Some big metropolitan areas have more than one part-time MBA programs in reputable business schools. As far as I know you can choose from great highly ranked MBA programs in Boston area, New York city, Washington, DC area. I have some posts in my blog about part-time MBA programs in general, and some more specific insights on Washington, DC area part-time MBA programs.
As for distance learning I am not very familiar with this subject. Generally speaking, online MBA degrees still have not come of age, and therefore are not perceived as equal to regular full-time or even part-time program by many employers. Especially the ones that are pure online. However if online MBA program is offered by a reputable brick-and-mortar business school, it could be a different story.
You would need to do more research on your own. A good place to start would be business schools ranking on Businessweek.com, arguably the most recognized ranking of the US business schools. They have sometimes peculiar methodology on ranking, but overall it is a great starting point. They have separate sections for part-time and distance MBA programs.
As I mentioned, in my blog you will find some material on the part-time MBA programs: <a href="http://parttimembadegree.com">http://parttimembadegree.com</a>

thank you very much for that information.
I live in the USA... near Boston...
I am doing my own research though.

I just need an advice in chosing the universities. I am not sure if i can chose well reputed, high profile universities with my profile.

Please help me out in this context.

In your area there are at least four part-time programs offered by reasonably well-ranked business schools:
Boston College
Boston University
Babson College
Northeastern University
Of course these are not top 20 MBA programs, but some top BS do not offer part-time at all (e.g. Harvard, Wharton), partly because they believe that they can not deliver the same learning experience in a part-time setting as they do in their full-time programs. That's what I in particular read at Wharton BS website. On the other hand Stern and Columbia do offer part-time programs.
Back to your situation. 650 on GMAT would not qualify you for top 10 full-time programs anyways. As for part-timeMBA programs, they are all reasonable schools. I am not familiar with finite differences in their rankings relative to each other. But you need to find the best fit for yourself. For example, I was admitted to part-time Smith MBA, but chose to go George Washington University part-time MBA for various reasons, even though formally Smith is a higher ranked school overall.