I use a simple, cheap and small Zip-Linq retractable cable to charge my Motorola E815 (and my ladyfriend's old StarTac by changing the plug out) from my laptop. It's strictly a power thing. No data. I just plug her in and it charges my phone on, or off, or in-use. No software to load or anything. Just like plugging into it's normal wall or car adapter. My Windows XP doesn't "recognize" any devise as being attached like some data devise being attached would. Nor does XP emit the usual connection sound like when a data devise is attached. It simply supplies power via the USB, as far as I can tell.

Don't know if there is something different on the RAZR that requires software of some sort for charging.

Here's their Motorola page:

http://www.ziplinq.com/retractable-c...-motorola.html

...but I notice they haven't updated their Compatibility Charts in some time, because my phone isn't on it, yet the kit included the proper plug. Mine was packaged just the retractable cord and a selection of plugs to change-out for different Motorola phone models. Nothing else. I got it at Fry's for 14 bucks if I recall.

But again...the RAZR could be something totally different for all I know.