I get the same message today. I am not sure what is going on. I am sure you don't have to stay connected to the forum.
It is possible you have uploaded more then your quota of files to gr.net forums. Rocky will know.
I had this problem - GR takes an eternity to launch, or just hangs and won't launch at all until you kill the process in task manger and launch the executable again. After a lot of research I tracked the problem down to Games Explorer. In a nutshell, Games Explorer looks for info on the game, finds nothing, because it's ancient/no connection etc., and rundll32.exe starts consuming massive amounts of your CPU as it searches in vain. The simplest and quickest solution is to rename the GR executable and then it won't be recognised by Games Explorer. The nuclear option is to kill Games Explorer by going to Windows\SysWOW64 and deleting or renaming gameux.dll (to gameux.bad, or something), and that will stop it screwing up other old games.
Incidentally, I had no problem installing GR on Windows 7-64 from the 'Gold Edition' disc, which has both expansions and no DRM (so you don't need the disc in the drive to play, which is handy). No idea if this version is still available, I bought it years ago.