I found a useful tool called GRABURL.EXE (http://toolground.com/files/GRABURL.EXE) that can output a webpage to a file liek so:
GRABURL.EXE "http://website.com">"C:\Folder\File.xls"
Of course you can change URL as well as Destination Folder/File/Filetype.
This way I could make a BATCH file (called run.bat) to grab the date and save the website I wanted to and then call that BATCH file when scheduling my tasks:
schtasks /CREATE /TN TaskName /TR "C:\run.bat" /SC MONTHLY /MO LASTDAY /M * /ST 02:00:00
For help on the parameters of schtasks, see here: http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/schtasks.mspx?mfr=true