As my H1B visa is expiring on August 2009, I wanted to file for an EAD but my manager advised not to file an EAD before 90 days of the H1B visa expiration date or else it may get denied. Thats why I was confused between the connection of H1B and EAD.
Now my doubts are clear since you have answered many of my questions, I think I should file for my initlal EAD tomorrow itself and also I would advise my manager that there is NO 90 days waiting period between H1B and initial EAD filing. Thanks so much for you help.