I am definatley a supporter of having a good mix environment, i.e. a quite one, treated one. However as most of us have bedroom and not control rooms you pretty have to work with what you got. I would not encourage you to buy computer speakers. You are getting an 002 right? It has monitor outs, get a pair of powered monitors that you can afford and a good set of headphones and you should be able to get a fairly accurate idea of what your mix is like. Even with "good" computer speakers its really hard (in my experiance) to get what you want. As I am sure you know studio monitors have flat frequency response, this is what you want. I can almost guarantee (because you are a noob) if you get a some computer speakers with a sub woofer your mixes will lack bass, the mids will be muddy and the hi's will certanly not translate like you thought they would. It is recomendable to have multiple "reference" sources, such as the afore mentioned headphones as well as other speaker, boomboxes are handy, as well as popping your new mix in the car and going for a drive. Just like Msquared you will need to get to know your monitors. I say get some decent monitors and a pair of sony 7506 headphones and go to town.