I'm trying to find a good beginner's guitar that's not too much like a Seagull, as mentioned in another thread. I read that there is a difference between an acoustic and a classical guitar, being that the classical has nylon strings. Are these nylon strings the copper colored strings? And if so, the guitar should be all steel string? If I buy a guitar that has nylon strings, can I just change the strings to all steel strings? Thanks I'll take any advice!

p.s. The guitar that I'm leaning towards getting is a Washburn D100, any other suggestions?