[TxMt] Spaces instead of Tabs

When typing the space key in my code in TextMate, how can I let TextMate use a particular number of spaces instead of that tab character? I would like to always use 2 spaces instead of the tab character.

Also, how can I auto-format code that already have tabs (or tabs replaced by, say, 4 spaces) to format it the way I want it (say, tabs replaced by 2 spaces)? Microsoft Visual Studio allowed me to do that. Does TextMate provide such facilities? (Guess I could always turn to regular expressions to fix such stuff.) _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/