Hey all,

I created a spreadsheet that allows users to select which products they've purchased and calculate the total. However, each week more products become available and I would like to supply an update to the spreadsheet for each user. The problem is if they download the new spreadsheet, they are forced to reselect which products they already have. The only way I've found around this is to ask users to copy the "drop-down list" column containing which products they have from their existing spreadsheet and copy it in to the new spreadsheet.

I'd like to be able to update the spreadsheet online so that whenever a user opens their sheet, it alerts them there is an update and they are able to download it and it will just attach the new entries to the end of the spreadsheet without altering the older information.

Here is a link to my spreadsheet if it helps you understand my problem:
http://files.filefront.com/Rock+Band.../fileinfo.html

For those who might not know what this is, it's a spreadsheet of the DLC found in the XBOX 360 game Rock Band.

Thanks for your help!