My son received an older lego mindstorm (RIS 2.0) RCX 2.0
Unfortunately, the software CD is not available. I contacted Lego to see if they could get a CD-ROM from them. They do not have them and basically let me know they didn't really care how I obtained the software.
Searching around the WWW was fruitless.
If anyone has this particular CD-ROM, please PM me.