After I had entered nearly 100 books into the XL spreadsheet I created for the new Gifted Resources library catalogue my husband gave me a Christmas gift of a complete library program Book Librarian Plus http://www.turbosystems.com/blw31.htm
Here is a description of the program from the website
It is very easy to use and a great improvement on the very simple system I used originally and definitely a huge improvement on my XL spreadsheet. It includes the borrowing system as well as the catalogue database.
Fortunately it was also very easy to import the data from my XL spreadsheet. So I hope to have the Gifted Resources Library completely recatalogued and the Library page returned to the website fairly soon.