Here are 12 different splash screens for WVGA, portrait only. I purposely left off a version number and the word Mobile so I won't have to do these over for future updates. I included one for the ladies since they never seem to get enough love from this site.
The attached zip file contains individual cabs for each splash screen. Just copy the cab that you want to your phone, install it to your device and reset. If you want to change any of the screens I recommend you uninstall the old one first just to be on the safe side.
