I am having problems with updating MX records for windows live. I have done everything required except I could put "7200" in TTL box because its the minimum value i could write there (3600 was mentioned in windows live mail setup). Still DNS configuration is pending. Please help me what to do. I am really frustrated by this setup thing.

My domain setup is cpanel based. Its something else I dont know. Please guide me what and how to do. Thanks in anticipation.