Hey peoples. Here's a modified version of the Ralink Airport app, modified to work with the dwa-140 prefpane. If you want to try it out, goto /S/L/PrefPanes and delete the DWA-140WirelessUtility.prefpane; then copy the WirelessUtility.prefpane supplied to /S/L/Prefpanes. Finally put the wireless utility app wherever you like and add it to login items, and there you go, ralink wifi that vaguely resembles airport.
NB, i created neither of the two programs supplied, although i modified that whose copyright apparently resides with aqua-mac. The other one, i.e the prefpane appears to belong to D-Link, in which case the copyright of such resides with them.