If your software only works on Windows, and the source code for it is not available, then the software is probably only compiled for x86 or x64 (Intel architecture). The Persee is ARM, so even if you could get an ARM version of Windows, it may not be able to run the software directly.
I have heard of Windows x86 programs run on ARM with WINE (The Windows-on-Linux layer) and QEMU (A CPU emulator to translate from x86 to ARM) but the performance is very bad and it sounds painful to set up.
Someone in the OpenPandora community, notaz has also tried statically recompiling Windows games to ARM and then using WINE.
Long story short, it would not be easy.