Hello, I am trying to record a show with music and voice on my iMac G5 with analog line in. However, as I use Garageband, as soon as I record any sound I hear my fan going through it which I can't cancel, even with maximum correction. So I decided an external microphone would be a great idea, however spending very much money is not an option as I'm going to use this equipment maybe only once and certainly not very often. - A Philips microphone battery powered mic gave reception, however only fair when putting my lips against the microphone, which is not acceptable. - A Logitech Desktop Microphone gave exactly no reception. Can you recommend me which microphone/solution to acquire or if I'm doing something wrong? Thanks in advance!