A while ago, I purchased a few Toshiba E750s with wonky digitizers. While searching for repair information, I came accross a utility from a company called Code Factory, which allows the user to remotely bypass and align the digitizer from the PC on a PDA that was hard-reset.
They have updated the utility and have included canned calibration files for popular PDAs, including the X50/X51 series.
The utility is available here:
http://www.codefactory.es/descargas/...eAlignment.zip
Code Factory specialises in applications for visually impaired people and this utility allows them to use the PC instead of trying to line up the small crosshairs on the PDA.
Cheers