Hi I spent ages trying to get my guitar to work through an imic on garageband on my powerbook G4. All i got was an extremely faint, fragile signal and very high interference noise level. I used a normal guitar lead, plugged into a jack adapter, plugged into the imic with the switch on the imic set to mic. There was no signal when the switch was set to line. Finally, I realised it sounded much better without the imic, just plugged straight in to the powerbook. There is still noise but it sounds much, much better. Do I need the griffin garageband guitar lead to use the imic without interference? Or is there just something wrong with my imic?