How to install a door frame for side door

[molly]

What tools do i need to replace an existing door frame. I need to replace a regular size door on my garage. Door frame is rotted out, and i want to replace it. Thanks for your help.

[HayZee518]

go buy a pre-hung door. the whole casing and door comes as a nail in unit. buy some shingles for shims you'll need these to shim up for level and plumb - rip out the old thing - place the new unit, shim and nail or screw the casing into the studs either side of the door jamb.