unable to access gmail security certificate problems

when I try to go to gmail I am unable to because of security certificate issues. I checked the date and tiem in my computer and they are set fine what do I do

Hello,

Take a look here: https://mail.google.com/support/bin/answer.py?hl=en&answer=82350

And here: http://mail.google.com/support/bin/answer.py?hl=en&answer=63590

not sure what IMAP and POP are - I do know my entire system was and still may be seriously infected - when I try to go other websites I get redirected to ads etc

Hello,

Your system is still infected. Open a new topic here:

http://www.geekpolice.net/virus-spyware-malware-removal-f11/

To get your system cleaned.