Virtual TI instructions:

Extract the 4 included files into their own folder.
Double click the Vti.exe icon and it will either open the Virtual TI or a setup thing.
Just click OK a few times in the latter case and the Virtual TI should open up.
The Virtual TI is exactly like the real original 83, and RPG should be preloaded, just click the PRGM button and Enter a couple times to open it.

Enjoy RPG and remember to use the RPG Survival Guide at www.geocities.com/HeaneySoft/RPG/index.html