help: sng spreadsheet troubles

[bearly]

hi, reg. reader, seldom post. i have been trying to install the orig. aleo magus sng spreadsheet from all the various links i have found. i have excel 5.0 installed in windows xp. i get it in excel, then i get the word that the file cant be opened. what am i doing wrong. this stuff is way over my head. i'm ok in the graphics dept. but this has me tearing at my hair. any help would be really appreciated. thanks in advance. h