i don't even know what rooting is, yet I flashed to sense no worries. Just download the SDK, download a recovery rom and a sense rom and go from there. mind you, you have to have the higher specced of the two magics. I wouldn't actually bother flashing to sense if you have the 192mb ram magic... IMO it wouldn't have enough balls. but yeah, if you got the right phone, it's a simple task!
if you have the lower specced magic and you're still keen to try Sense, you have to update your SPL, which greatly increases the chance of you bricking your phone
