The bat images you see in the Create a Player section of the game are all stored in one .FSH file as Colin has pointed out. So, even if you swap one individual bat for another as you have been you won't see any difference in Create a Player, you'll only see the difference in-game. If you wan't to change what you see in Create a Player then you just have to import the bat image you want over the old one in that .FSH file Colin has mentioned. It's quite simple.
hey wifler well i faced this problem too. to solve it well clear out everything in the in C:/my documents/ea sports/cricket 2005 and then unzip unique faces patch and then go to your root directory of the game and extract the file called faces.?(forgot,maybe .exe or .bat).and then do as the readme says.