I've approached the issue of a "timer" for various functions
on different project, and my super-advanced programmer says there's
no such function in ASP. I've looked and haven't found.
As for the issue of pulling 20 addresses at a time from the
database, look up the following:
FOR loops
Here are a few tutorials I found:
http://www.freewebmasterhelp.com/tutorials/asp/4
http://www.w3schools.com/vbscript/vbscript_looping.asp
Of cours, you'll also have to repeat a 1-20 count, and start
at the last read record, so it could be a little tricky.
I'm sure I haven't given you the full answer, but I hope this
gets you started.