You need to be more specific, meaning give more information on your problem. When you do have the right questions, you will get better answers.
1. Do you have a good internet connection,(broadband preferred)
2. Do you have a firewall and antivirus installed and running, if so are there settings blocking some programs from connecting to the internet.
3. What browser are you using, do you have "pop blockers" activated.
Check all the above, from there we can help more
don't worry if you think your replies are silly, as we all learn from other people in some way shape or form