Another device called Margi Systems' Margi Presenter-to-Go SD for Palm and Treo uses a Treo's SD card slot to connect directly to a projector's VGA input. Although the product has been discontinued, you can still buy one. An Australian company called Ambertech is the last place that still carries it. I confirmed via e-mail this week that they still have units in stock and ship to the U.S. To get pricing and details (and to order) send an e-mail to: margi@ambertech.com.au.

And finally, a $414.95 product called the infraBLUE IRMA Bluetooth Presenter plugs directly into a projector, then gets your slides and control inputs via Bluetooth. Best of all, the gadget supports most Palm devices including the Palm OS Treos, Pocket PC and Windows Mobile devices, and various handset models from Nokia and Sony Ericsson.

So there you have it -- all the information you need to transform your gadget into a powerful, always-ready presentation tool -- and impress even the most grizzled business executive!

Mike Elgan is a technology writer and former editor of Windows Magazine. He can be reached at mike.elgan+computerworld@gmail.com or his blog: http://therawfeed.com