seriose lisp programming

How/what libs?
Mainly sockets and SDL stuff.
Please tell me i can use these in scheme. I don't want to read steeles book on common lisp it's huge ;_;
currently i am using MIT/scheme.

Would you like to take the discussion a step further and provide some example code of Common Lisp for which Scheme code to solve the same task would be less elegant (due to lacking basic iteration constructs)?