How do I modify an existing template in excel 2007

[mynah1]

I would like to create a loan repayment schedule with the ability to account
for accrued interest and missed payments.

 

[ryguy7272]

Maybe this:
http://www.vertex42.com/ExcelTemplates/excel-amortization-spreadsheet.html

It's free and they have several other files, all free to download.

HTH,
Ryan---