I think that the simplest solution is to:
1. Acquire a desktop system (IDE/SATA) that has enough memory and disk space to accommodate your application.
2. Download a 30 day demo version of Microlite Edge
http://microlite.com
3. Install this on your current system.
4. Create a backup to DVD, You will need a DVD Writer in the old system
5. Using the Microlite software, you can create an emergency boot cd for the target system (IDE).
6. Use the emergency boot cd to boot the new system and restore the backup.
7. Re configure the network card, and printers if necessary.