The Application Process

All,
Please direct me to the right section in this forum. I'm looking to apply to high ranked univs that offer part-time, Evening/Weekend MBA program. ( Haas, UCLA Anderson, Marshall, McCombs, etc)

1) What is the rough GMAT score that will be considered admissable? (Anyone who has applied and got admission could you please post your experience?)

2) Is it OK to write to the AdCom at the universities directly asking for details (regarding score range, credentials etc) and provide a brief summary of the profile and see whether they would consider the candidate for admission prior to application process? ( this may be too dumb question )

3) What weightage is given for undergrad GPA in this program, eventhough I have passed with first class, some of the course grades are not a shine. I do have a good professional work experience (14+ years) and good Recommenders.

Please let me know, any pointers is greatly appreciated.

Thank you!