the tier 1 general visa is for 24 months only. to extend your stay beyond 24 months you must renew it. you won't be able to do so without a job.

as far as i know, you must have at least a bachelor's degree and that's how they accept that you are 'highly skilled'. they want ORIGINAL documents, no copies. don't worry they will return these to you.

bank statements - latest 3 months showing minimum of GBP2800 and must be original as well.

TOEFL is accepted, marks must be 110-120 (internet based test). you must also provide the original cert and test scores.

~Live like there's no tommorrow~