Digital BW, The Print

This is a tad off subject, but the knowledge level at this group is 
very high so I hope you can help.

I scan my negatives on a Minolta Dimage Scan Multi II using VueScan 
7.6.65.  The Scan Multi II is cabable of scanning MF negatives at an 
optical resolution of about 1128 dpi and than interpolates that up 
to 2830 dpi using the Minolta Dimage software.  The Scan Multi II is 
also capable of scanning the middle parts of the MF negative at an 
optical resolution of 2830 dpi (the same resolution of a 35mm 
negative).  Anyway, my question is, is VueScan cabable of scanning 
the MF negative at the interpolated 2830 DPI that the Minolta 
software is capable of and if so how do I make the correct settings?

A second question is that when I scan negatives with VueScan, when 
the scanning is complete my hard drive goes nuts when I try and open 
the scan in photoshop, almost shutting down the computer for 
literally 4-8 minutes while it is doing something.  I can't 
understand what processing it could be doing that takes that long 
and it gets to be very annoying.  Anyone have any experience with 
this?

Thanks for any help.

Matt

Running Win XP pro on Pent IV computer 1.8Ghz with 768 meg memory 
and photoshop CS.