How to install ImageMagick?

I been trying to install your script for over an hour but I keep getting this error:

Check to see if ImageMagick is installed so that Gallery can manipulate images (rotate, resize, make thumbnails, etc.). You only need to have either ImageMagick or NetPBM installed.

Missing optional binary composite. Without composite gallery will not be able to watermark images, except you use NetPBM and have the pnmcomp binary installed.

2 of 3 ImageMagick binaries located.

But I've already FTP ImageMagick-6.2.4-1.tar.gz into my web directory. I don't know why it's not working. Unless I am FTPing the wrong file. Please help. Thanks.

Essie

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The following information is required to get an answer:
Get this information from the PHP diagnostic (in the configuration wizard).
Gallery URL (optional but very useful):
Gallery version: 1.5
Apache version: 1.3.31 (Unix)
PHP version (don't just say PHP 4, please): 4.3.10
Graphics Toolkit: ImageMagick
Operating system: window XP 2004
Web browser/version (if applicable): Firefox 1.0.4