Success at last! I finally got the drug I needed to play this game, and I got a working 'no DVD launchgtaiv.exe' so I don't need the crack with the magic dll anymore.
A successful update of directX 9 cleared my error issue with using FXAA. Initially, I tried to update DX9 a few days ago, but there was error during the update; I assumed it was 'cause it was already up to date.
With DX9 updated, I tried SMAA first; however, any 'improvement' found was negligible (yes, I set the injector to 'ultra high' or whatever it's called.). ENB, with patch 1.0.4, gave flickering issues just like other icenhancer versions. FXAA gave me exactly what I wanted. When it's ready, I hope I'll better luck with icenhancer 2.1.
Securom replied back with steps on how to use the diagnostic tool within the game folder. The game works now, so I don't need their help.
I want to help others. Later, I'll plug up my XP drive, get the game ready, then follow Securom's steps.
Thanks again guys, and now I can start the first mission with ease.
Although, it would be nice to have an in-game clock like in GTA3 to SA. Not for missions, I just like knowing the time of day.
Has anyone has made a mod that can do that?