I am looking for maps for Heroes III.

Hey everyone! Can you help me find a working version of the "Secret Seven" map (from way back in 2005, Heroes of Might and Magic)? I found it on one forum, but there's a bug on the map, and I can't fix it myself because I'm not very good at it. Also, I can't progress further on the map – everything is locked. I really want to complete it. Thank you in advance!