The only differance between the main CD and the DVD is that the DVD will have more packages availible for you so you don't have to spend time downloading them during the install. This is exmtrealy handy if your box doesnt have an internet connection.
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The main options are listed at http://www.debian.org/distrib/ - consider downloading a "small net install" CD (just 180 MB in size) and using that to download the rest according to what you want.