Is the LCD screen or Digitizer on your HTC Touch broken?  No backlight on your HTC Touch?    The repair process is pretty straight forward and you can get nicely priced replacementHTC touch LCD screens on eBay.
LCD Screen for HTC XV6900 XV 6900 Touch CDMA NEW USA
LCD Screen for HTC XV6900 XV 6900 Touch CDMA NEW USA
Paypal   US $27.65		 OEM LCD Screen for HTC XV6900 XV 6900 Touch CDMA NEW US
OEM LCD Screen for HTC XV6900 XV 6900 Touch CDMA NEW US
Paypal   US $27.65		 LCD Screen for HTC XV6900 XV 6900 Touch CDMA NEW USA
LCD Screen for HTC XV6900 XV 6900 Touch CDMA NEW USA
Paypal   US $27.65

The two videos below will show you how to go through and replace them.

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