I said I would explain about the core patches, they are very nice, speeding up loading time and some other nice features.
First download
this, Save it in the renegade folder (So that would be for people with the first decade C:\Program Files\EA Games\Command & Conquer The First Decade\Command & Conquer Renegade(tm)\Renegade)
Do the same for this download:
thisThen open the first program, which should be patcher.exe, if you placed the PATCHALL.RTP also in the renegade folder (not the data folder) it should start installing the core patches and after that you can just play normally, with faster loading and some other features.
PS: If you need more help, go onto vent, everybody there will be happy to help you, including me.