I've installed Linux (fc6). It can't read DVD but can read CD (with a DVD/CD rewrite). Please help me.

Is the problem with a dvd like you'd get from a shop with a film on it. Or with a data DVD. If it's the former you'll need decss to unscramble the content. This is potentially illegal in some less enlightened countries like the USA. More info at:

http://en.wikipedia.org/wiki/DeCSS
http://www.lemuria.org/DeCSS/

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Charlie Harvey's website - linux, perl, java, anarchism and punk rock: http://charlieharvey.org.uk