troll touch has some nice ones. There are also clear covers you can put over the screen for somewhat limted touch, but not too bad. Also, infared (IIRC) adapters you can use to achieve the same effect.
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"Fix it 'til it Breaks."
Jacob - EiC & Director of Technology Mac Pro Quad 2.66 - 4GB RAM 160 GB SATA RAID 1 - 650 GB Storage Quad 19" Widescreen LCDs Accessorized to the Hilt