Dirt 3, this Codemaster's game achieved really well reputation in gameplay story and also graphics, but maybe some people just don't get enough with this "charming" graphics, so me, using Boris Vorontsov (The actual maker of this mod) release the Graphics mod for Dirt 3.
You can download it from this video (my video To be Honest ^_^ )
The installation guide and the download link is in there
and if you don't get enough with the video, here some screen shots
IF, the file extention isn't .gxt (like .FILE or something like that) change it to .gxt
(Optional) if you want to replace the .gxt to another language, just rename it
Replace the .gxt in common/text
Jailbraked PS3 Version
This is pretty complicated, so watch and do that carefully
BACK UP FIRST !!
Download the link
IF, the file extention isn't .gxt (like .FILE or something like that) change it to .gxt
(Optional) if you want to replace the .gxt to another language, just rename it
Open common.rpf with OpenIV (Google it, please)
Open text folder
Click "Edit Mode" in OpenIV
Delete at least 1 unnecessary .gxt (to give extra spaces, just do this or your game wont run)
Replace the .gxt
Now go to your PS3
Test it, if the game showing "infinite loading" delete installed GTA IV game in the installed game folder in PS3 (CMIIW) and install again with your modded IV
Test again...
If you can't play the game, replace the modded with the original one (I don't want any risk)