Pro Tools cares about the actual hardware, but as as long as it's fast enough/low latency enough your main critical issue is will be can the PC you are looking at run some old decrepit version of Windows... and many can. You have to make sure you have a license for old decrepit Windows you can install on any new PC. Many Windows OEM licenses (like you get when you purchase a PC) are not legally, and might not practically be usable on a new PC. Microsoft wants your $$$ for new stuff and does not want to support dead OSes any more.
For many folks the best way to get a Windows PC for Pro Tools is to build one and this monster thread is *the* bible for all home built Pro Tools PCs:
https://duc.avid.com/showthread.php?t=238426
Pro Tools Windows compatibility info is here:
https://avid.secure.force.com/pkb/ar...tibility-Chart
003 driver compatibility info is here:
https://avid.secure.force.com/pkb/ar...02-003-Drivers
Folks have the 003 running under Windows 11 (basically it's Windows 10).
My strong opinion on this is you are almost certainly better off just getting off your very old Pro Tools software onto something new, running Windows 11 on a modern PC, and as a starting point Pro Tools Intro is free and (edit) stupidly crippled an annoying but you can at least test with it. Other *subscription* options are Pro Tools Artist and Studio and Ultimate. Lots of good info on Avid.com. Just be aware they are now subscriptions. And if you don't need Pro Tools there are great other DAW choices out there, especially Reaper on Windows.
And while you should be able to get the 003 working I'd plan on it not being supported much longer. There are so many great third party interfaces out there today from folks like Motu, UAD, RME, Focusrite, Presonus, etc. If/when you want to purchase a new interface if you describe your needs here folks here can help with suggestions. Heck I'd consider modern USB interfaces just not to have to mess with FireWire on a modern PC (although it's perfectly doable with a PCIe card... but not say on almost any Windows laptops.).