How-to disable Popup Blocker
For Internet Explorer :
With Windows XP Service Pack 2 (SP2) Internet Explorer allows you to prevent most pop-up windows from appearing over pages you want to view while you're using the Internet.
Using Pop-up Blocker
When you install SP2, Pop-up Blocker is turned on in Internet Explorer and set to the medium setting, which means it will block most automatic pop-ups. The default settings for the pop-up blocker allow you to see pop-ups that are opened when you click a link or button on a Web site. Pop-up Blocker will also play a sound and show the Information Bar when a pop-up is blocked. You can adjust these settings so that Pop-up Blocker works the way you want it to.
To change Pop-up Blocker settings
Internet Explorer Tools menu
If you want to see pop-up windows from a specific Web site, type the address (or URL) of the site in the Address of Web site to allow box, and then click Add.
Pop-up Blocker Settings window
Tip To temporarily allow a site to display pop-ups, click the Information Bar when it notifies you that a pop-up has been blocked.
Then click Temporarily Allow Pop-ups.
For Google Toolbar :
If the Popup Blocker is preventing a new window from opening, you can always let a new window open from a "blocked" site by holding down the CTRL key while you click on a link.