C&C: Tiberian Sun was released as freeware, and can be downloaded for free!
Na.llnet.cnc3tv.ea.com (1.3 GB)
See you on the battlefield!
PS, important: Xonone was first to post this information here on Moddb:
Moddb.com (You can look up his groups: X's Corner, CNC4 - love it or hate it!! and xonone Productions (TM) and eventually join or track them. ;-))