For those looking for nice anti-aliasing after trial and error I found a perfect fix, which might or not work for some users:
1.Download either this Hitman: Codename 47 - Widescreen & FOV Fix or Nemesis2000's Widescreen Fix, which works for you best, for me since I have old PC on Windows 7 I use Nemesis2000 Fix.
2.Download Latest Dxwrapper Version and chose dx7.games.zip, then extract the files to the game directory, overriding the ones for Nemesis2000 Widescreen Fix, if you chose to go with this one.
3.In dxwrapper.ini config file change these lines to these down below:
[Plugins]
LoadPlugins = 1
LoadFromScriptsOnly = 1
[Compatibility]
Dd7to9 = 1
[d3d9]
AnisotropicFiltering = 16
AntiAliasing = 8
4.In scripts folder find h47.ini and edit your wight and height to say 1360x768 for example or 960x540 or 960x720 (it might crash for some users), for me since I have ATI Catalyst Control 13.4 with ATI GPU Scaling to fullscreen stretching, so it works for me, but not might for you.
P.S.
Disable Texture Compression, Palette Compression and Vertex lighting in Graphic Option, since they don't do anything but will either worsen quality or cause glitches.
Also Check for more detail Dxwrapper Configutration.
That's it. have fun.
This current build has too many errors on my end that prevent me from executing it properly. A practical pain after rebooting and checking the game (Unreal II, for example) for results numerous times. I went searching and found this in a Draken forum post that actually worked for me if anyone else is having issues.
DirectMusic_Fix_64-Bit.zip