Ouch...
the price on this one is awful but here's what you are looking for
http://cgi.ebay.com/USB-Cradle-Dock-...QQcmdZViewItem
i got a cradle, battery, car charger, black skin [horrible], and leather case [phone doesn't fit inside]... for 25 bucks on ebay.
Half the stuff is crap but the three that work were still worth it.
Here's the exact Cradle I have (it's part of this deal)
http://cgi.ebay.com/5-ITEM-COMBO-FOR...QQcmdZViewItem
The must say it rocks. Both USB and AC adapter so you can just charge or sync easily.