Troll Touch, provider of custom touchscreen systems for Apple hardware, today announced the immediate availability of its internally integrated touchscreen product for the current Apple 20- and 24-inch aluminum iMacs.

Both systems feature the company’s high resolution touchscreen technology which supports input via fingertip, gloved hand or stylus. The touchscreen is internally connected utilizing one of the machines USB ports. Troll’s innovative component integration technique does not alter the machine’s form factor in any way. To the casual observer, the system does not appear to have been modified.

Customers may purchase completely touch-enabled packages from Troll Touch, an Apple VAR and PSP or they may supply their own, previously purchased iMac(s) to the Valencia, CA company for touchscreen integration.

Prices are as follows:
• 20-inch aluminum iMac, 2.0 GHz, touch-enabled: US$2299.00
• 20-inch aluminum iMac, 2.4 GHz, touch-enabled: $2599.00
• 20-inch touch upgrade, customer supplied iMac: $1099.00

• 24-inch aluminum iMac, 2.4 GHz, touch-enabled: $3399.00
• 24-inch aluminum iMac, 2.8 GHz, touch-enabled: $3899.00
• 24-inch touch upgrade, customer supplied iMac: $1499.00

The company also touch-enables the Apple 20-, 23- and 30-inch Cinema displays, 13-inch MacBooks, all previous iMac generations, the eMac and both the 12- and 14-inch iBook laptop models.

More info here.