First off, TANE is not my first copy of Trainz. Just haven't been into gaming for about 8 years due to personal stuff.Recently, I found all my older copies of Trainz, MSTS, FS2004, Falcon Allied Force and many others. Along with gigs of freeware and payware for all. Through horse trading, I have in front of me a Windows box. It has:I3 6100 cpu1 TB WD hard drive16 GB slower DDDR 3? RAMR9 380 sapphire nitro video cardWindows 10I'm into this thing for $250 US and a set of used tires. Long story.The only thing making me nervous is the operating system. I would like to replace it for peace of mind. I do have one copy of Windows XP 32 and two copies of Windows XP64. All legit.My thoughts are to trade out the R9 with a GTX 750 to support Windows XP. I'm only running older titles of games I mentioned. Being one of those MAC heads, most of what I need to do the MAC does. I really don't want to throw any more money into this Windows box. Any thoughts or ideas? New ways of thinking?