Smolensk 41-back to square one

[stigmata]

Hello all,

I was an old time member of The Blitz and am now easing back into this system after many years away. I have the original disc (ver.1) of Smolensk and want to reinstall and get it up to speed. Going to Tiller's product page I see that the map is now much better and like the look of it. What do I need to do to get the latest version? Can I work from this old copy or do I need to purchase the title again? I could find no patches or downloads on Tiller's Web site and wonder where to find the support. Also, any issues with the older games and Windows 10? I had no trouble downloading Tunisia 43 but know things may be different for that.  Thanks.