what are steps ensure that mysql extension enabled? HELP NEEDED. URGENTLY!

what are the steps to ensure that the mysql extension enabled??
can someone show me step by step as in how to ensure my mysql extension enabled?

i am having problems to connect my PHP document with the MYSQL Database.

i am using PHP version 5, by the way.

I answered your original thread. Please don't make multiple threads on the same subject, urgent or not. (In fact, putting 'urgent' in the title is arrogant and tends to disincline people to help.)