ok i've just bought a main squeeze compressor by digitech, i put it through into a digitech hothead and into my amp. i like my sustain high but with the hothead on i get an extreme fuzz sound when i'm not playing. any way to avoid/get rid of this?

buy a noise gate and/or buy a better distortion pedal with higher output resistor values. If you use single coil pick-ups this could also increase the noise. Compressor's naturally add noise to a signal, they are essentially mini amplifiers. I here good things about the ISP decimator noise gate but I've never used one so I can't comment personally. that seems like the easiest route