Hey Sabbath,
I see your still having that little problem from the chat room so Ill just refresh.
First, DONT use the mic from the computer for your mic. Dont even put it in the mic in. Get a used SM57 from ebay (bout 60-80$ depending on what kinda deal ya find) and plug it into the line in on your soundcard.
You said that the buzzing was the biggest problem and since your using an instrument with single coils the issue is more likely than not a grounding one.
Like we said playing close to a turned on computer or monitor will cause a huge humming and buzzing so try to get as far as you can AND try to angle the guitar in the position it makes the least amount of noise due to the PC.
Another is to make sure its pluged in the right way. If the ground prong is were the hot should be youll have a buzz problem. Like I said see if you can locate a polarity switch on your amp. All the amps I own have one in some form somewhere but thats not to say yours definitly does.
Like I said try getting a ground adapter for your plug the ones that look like a three pronged outlet plug with the third prong missing.
When you plug your guitar directly into the computer the output is going to be very small so either run it through the amp first or get a DI box or transformer to boost the signal. The weaker the signal the more noise in your noise/signal ratio. Thats not to say that blasting it is a good idea but just make sure the signals hot enough.
Oh, and, single coiled guitars are always gonna be more noisy than humed guitars so dont shoot for complete silence, just a tolerable level.
Let me know how you make out