Can't access DVD (RAW file system?)

I'm trying to get some files off of an old DVD-RW, but I'm having some issues doing so. Whenever I try to open it in My Computer, Windows Explorer will just hang. I tried using CHKDSK, but it said that the file system is RAW, and RAW file systems aren't supported. I did some research. I read somewhere that the issue was with Windows 7 and incompatibility with RAW file systems (not sure how related this actually is to the issue at hand, but I decided to see if this was true), so I went to my ancient Windows 2000 tower. I plugged in an external DVD-RW drive, and I put the disk in. When I tried to access the disk from My Computer, Explorer began to hang again, but unlike with Windows 7, it actually began responding again. Now when I tried to access the DVD, it would say 'The parameter is incorrect' or something along those lines. I really need to get the files off of this DVD, so any help would be awesome. Thanks in advance.

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Ok, so CD recovery tools don't seem to work for me. Programs just seem to hang/not recognize that a disk has been inserted whenever I try to access the CD drive. Like I said, I'm really desperate to get the files off of the thing, so any other suggestions?

Can anyone help me?

See if How to Mount a Raw Image in Windows helps, no idea if it can be done for CDs though