It doesn't look like the drivers will work with this. I found this thread:http://www.mythtv.org/pipermail/mythtv-users/2003-April/002508.html
It doesn't seem to be supported by either the ivtv drivers (which work with the pvr250/350), or with the blackbird drivers we're working on.
I found this project to write Linux drivers for it:http://pvrusb.sourceforge.net/
But it doesn't seem to be active. Here's another project:http://pvrusb2.dax.nu/
but it also isn't finished.
So from what I can tell, there are no complete Linux drivers for this product.