I contacted the author of Sharity about the .DStore files and was told that there was nothing he could do about it--its just the way CIFS works.
I should also point out that there is a new preview version of Dave available for OSX from Thursby. It seems to work nicely, and a full version will hopefully include the ability to access shared PC printers (which sharity lacks). I haven't noticed whether DAVE puts any "junk" files on the PC side of things. I know it used to put the "resource.frk" file. My PC friends used to love that one, "resource freaks" they called them. Morons.
The free student license is limited by the way. You can only connect to two file servers.
