Well I'm trying to get the word out that Veamon Studios will be releasing the SW RCII Mod that have been working on. It is by no means finished but you can enjoy what we have so far. Their are some hardware requirements before you can use this mod though (this is mainly due to some larger level sizes and upgraded graphics)...
1. you need to have a "good" CPU (dual core recommended)
2. you need a graphics card with 128mb minimum memory and at least a 350Mhz clock speed on the graphics card
3. a sound card is recommended, although by no means required
Also realize this is not a final release or even a beta, it is a very early release.
With all that said, the link will be up on sqon's website soon.