I've always found OO programming completely natural. n fact, it's the only kind of programming i've ever really done - create a structure with data members, and then create functions to work on that structure. you can (and should) do this in low-level languages such as C and assembler.
Of course, if you want to go the whole polymorphic route, i'd suggest using something like c++, but the key ideas are really structures, and functions that operate on those structures.
