RB3D is better than ever with a plethora of astounding advances.
Go easy at first, it's easy to get overwhelmed and screw up.
Check out the "Install procedures with Sources..." thread top of the Forum.
You need a glide wrapper, try dGvoodoo 1.50beta2 first.
You need settings utilities, CM11, FCJCP and ReLoad, all three. You can pre load CM11 with several terrain patches.
Get this all up and working good then save this install as an archive. COPY the entire install each time you want to try a new UOP. If a UOP gets messed up you have a vanilla install to recopy.
DELETE all open Campaigns before installing a UOP.
HASP/SP3 plus a "combo" terrain (OTE, PL2 and PL1) will have the game's graphics fully updated to the most recent standings.