saraclare1 - I've found that when I post I'm having a problem to the comments under a sweeps that THEN others will post they too have problems, or they did, and how they resolved it, so try posting there too.
As to issues with sweeps forms, there are many reasons for them:
It *could* be that you have a popup blocker that blocks it, or Maybe you should update?
IW/FLASH/resource intensive Sweeps not working? Try this: http://www.sweepstakesplus.com/smf/iwflashresource-intensive-sweeps-not-working-try-this-t17404.0.html or try compatbility view
Or ALLOW: If it STILL won't work? Put the pesky site in your allowed:
At the top, click on>TOOLS>INTERNET OPTIONS>SECURITY>TRUSTED SITES>Click on sites button, then type or C&P the site address in add this Web site to the zone then click ok/apply.