If you are seeking help, it is important for you to clarify your problem. Important details about your device would include:

--What model of phone?
--Original carrier of the phone?
--For PDA's/Pocket PC's: What ROM?

Important details about your situation would include:

--What erroneous behavior?
--What feature not working properly?
--What error message (if any)?

Important details about your response to the problem would include:

--Did you SEARCH FIRST for an answer? (You would be surprised how many problems could be resolved with a simple search.)
--What have you tried so far that's not working (if anything)?

If you don't ask your question with enough important details, then how do you expect to get a comprehensive answer?

Cheers.