the roof on my house is old, i'd like to go with metal for a new one. i'm fairly capable around the house but haven't done much roofing.<br /><br />how hard is it to install one? my roof is very basic. the backside is 1 large rectangle and the frontside has 1 peak over the extra bedrooms.<br /><br />are there any good sites i can read up on?<br /><br />thanks