Unfortunately, I can't advise you to try to duplicate my setup. I happened to have a valid Windows 98 license and a valid Win4lin license, neither of which you can buy anymore
I don't know about win4lin, but acquiring a Windows98 license can be as easy as picking up an ancient, free PC from Craigslist with a registration sticker on it.
If you have the requisite large-company/educational institute Microsoft licensing, you get to download Microsoft programs from their Technet website - right back to DOS and Windows 3.
Win4Lin licensing might be more of a problem, though.
I don't know about win4lin, but acquiring a Windows98 license can be as easy as picking up an ancient, free PC from Craigslist with a registration sticker on it.