Do you mean that the import (and conversion) of a DOS specification is slower than you expected, or that the calculation of the resulting financial statement is slower? In either instance, I'd suggest moving the data local. You might also want to check whether you are running on a 10 Mbit or 100MBit network. If you think you are running on 100MBit (more common now), then you should make sure that your hub is a 100MBit hub, otherwise you're only running at 10MBit.

Other questions:

How large is your charge of accounts? How complicated are your financial statments? (number of rows & columns). Did your DOS spec round to the nearest $? This makes for a very complicated conversion, and you'll find the specification is simpler if you turn off rounding prior to conversion.

PS - Might be time to consider buying a new server - Pentium II/233 is pretty slow these days. What Network OS are you running? NT? Novell?