Making a Vehicle an Attachment

Hi.

What would the differences scripting wise in doing this?

and where should i look first?

Is there an onattach type function that works simlar to change?

Well, vehicle functions won't work in an attachment. Physical movement will, but only to move, not to rotate (so you'd have to allow CONTROL_ROT_LEFT and CONTROL_ROT_RIGHT to do their default behaviors if you capture them at all). There's no automatic 'sit' animation for an attachment and there ARE still the normal walk/run/fly animations that play, so you'd always have to override animations carefully.

You might look for "flight assist" and/or jet pack scripts. Those might give you a good start.

The 'attach' event fires when an object is worn or removed. See http://www.lslwiki.net/lslwiki/wakka.php?wakka=attach