bluetooth dongle to dongle

Hi,
Im looking at bluetooth to cominucate with a remote mcu from my pc,
so I got a a couple of bluetooth dongles cos they are so cheap on ebay,
and there are some bluetooth devices wich look like simple rs232 conections
to the pc
but the dongles are also realy small (and a lot cheaper)
so the obvious question is what do I need to use the 2nd dongle on my remote
mcu,
a usb type thingy of course but I gues it needs to plug into something that
looks like a pc usb port,
many medium mcus have usb port wich act as slave devices but a few have usb
wich act as master wich I assume I need,
but what is involved in the software side thats available or needs to be
written?
of course I could use a more powerfull mcu wich can run windows ce if that
would be able to drive a usb dongle,

I gues what I realy need is a dongle wich atatches to slave devices but they
dont seem to make those I wonder why not ?
or maybe they do but I not seen it, maybe I could make one :o would be cool
you could plug webcams in to it and such.

Colin =^.^=


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