there's a metal mat out there that expands into several textures, including one called 'hull plate'. There's also someone called Bill, that had a set of spaceships with some very nice textures (though, it must be said, that overuse of these [who, me?..;] will push the size of a jpg past the 500k limit..;) He posted them in a thread awhile back.

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)