how easy is it to replace an old fashioned solid garage door with roll up panel door?

[keakar]

I have an old solid garage door, the kind with the big springs on the side that the whole door gets lifted as one piece.

I need to replace it for obvious reasons but I have never installed a garage door before.

is this something I should pay the idiots at home depot to do or it as easy as following the directions and its pretty fool proof to do?

im figuring on getting one of those cheap $250 doors from home depot since its just a simple plain roll up panel door that is all I need.

please advise? are there any "special" things to expect or will it mount up just like the old swing door mounting points?

thanks for your advice