install FirefoxView add-on and it lets you open a link or the current page that you are browsing using IE in FF.
http://addons.mozilla.org/en-US/firefox/addon/223
The extension adds menu items to the Internet Explorer context menu. Right click somewhere on the page and choose "View This Page in Firefox" to open Firefox with the current URL. Similarly, right-clicking on a link (image, anchor etc.) and choosing "Open Link Target in Firefox" opens the link target in Firefox. Obviously, the extension works only on Microsoft Windows.
http://www.iosart.com/firefox/firefoxview/
IE View does the reverse.
http://addons.mozilla.org/en-US/firefox/addon/35
IE View adds menu items to the page context menu, and the link context menu. Right-clicking a link now includes an "Open link target in IE" menu item. Right-clicking elsewhere in the main body of the page (not within an image, text box, etc.) gives "View this page in IE."
You can also add sites to an "always-view-in-IE" list. These sites, when reached in Firefox, will automatically reopen in Internet Explorer. The site you are currently viewing can be added via the Firefox
http://ieview.mozdev.org/
Also if you install IE tab add-on you can open a tab in FF for any page you are browsing.
http://addons.mozilla.org/en-US/firefox/addon/1419
This extension is derived from the famous extension
IE View, but much different.
While IE View always open IE-only pages in a seperate Internet Explorer window, IE Tab can view them in a Mozilla/Firefox tab.
http://ietab.mozdev.org/