Gayle,
I'm afraid you won't like what I have to say. You are trying to upgrade
form a ancient to an medieval OS. What's more, if the medieval OS says
it can't find a math co-processor then your computer has a 486SX or
earlier processor (if memory helps); math coprocessors became an
integral part in the first Pentiums, and never showed on the face of the
earth as separate chips since. Mind you, this was around 1995, if memory
helps (or was it earlier?), so we are talking stone age of PC's.
Therefore, your only chance to get one would be in Intel's, AMD's or
Cyrix's museum (anybody remember Cyrix?)... and even if you manage to
get your hands on one, chances are your PC won't be able to run Win95
due to other resource shortages (CPU speed, RAM, HDD etc). It's a no-win.
Bottomline, you are losing your time, your HP PC belongs in a museum, at
least as a general purpose PC. Get a new one, so you are able to run
contemporary OS and software.
Regards,
Nikos