|Expanding on Dave`s #4.|
Surely the start point is check in the bios, to ascettain whether or not it provides options to set drive A and/or B for 5.25" disks.
If so, a 5.25" drive can be installed, although you may need power and/or interface cables or adaptors..
Then you can do your copying.
However if you just want to copy a few files to a cd (or dvd) it might be easier to find someone nearby who has a working 5.25" drive.
Be warned though, it appears increasingly difficult to run older dos programs on new equipement, more so when printers are involved. .
Good Luck - Keep us posted.