Zip files are a source of wonder to me... They seem to choose where they are saved and then hide to another folder when they are extracted.
In this case clicking the rustic23 reference will allow the zip file to be saved ... in my case to the My Documents folder. Opening My Documents, you should find a bsi.zip file; double-clicking should create a new bsi folder (still in My Documents) containing bsi.xls and instructions.doc for your use.
I'm looking at the excel file now and trying to absorb it - so will comment later. So far it seems to be a more extensive version of Rustic's earlier Financial Forcasting model. I liked (and use) the earlier version.
JohnP