[Lauraine Graham- with the Lord]

I am new to the technical side of music production, having previously been a singer and leaving all that sort of stuff to those who know what they are talking about. However, whilst I am getting on rather well, I have to say, on the graphics side, I am having the devil of a job with the vocal removal side of things. In every case, so far, the "high" frequency tab has very little effect when used. Also my WAV file is full of crackles and pops (the original "with vocals" version is clean). This is driving me crackers, if you'll pardon the almost pun. A friend told me that I may be over-producing. Fair enough, so I used a softer touch. It still happens. He says there's a lot of bleed over on the high frequency, whatever that is, and I don't know what to do about it. HELP PLEASE!!! from a damsel in much distress.