jZip has hijacked your home page setting. You will need to completely uninstall it if you want to be able to change your home page. Follow these steps:

1. Open Control Panel > Add or Remove Programs
2. Locate the entry for jZip and uninstall it.
3. Also locate any entries with names Windows jZip or Windows jZip Toolbar and uninstall all of them.
4. Open Windows Explorer and go to C:\Program Files\ folder.
5. Delete any folders with the name jZip or Windows jZip or Windows jZip Toolbar.
6. Open Firefox.
7. Go to Tools > Add-ons menu
8. Select the Extensions tab
9. If you see an entry for jZip Toolbar, uninstall it.
10. Type about:config in the address bar and press Enter.
11. Accept the warning
12. In the Filter text box, type jzip
13. You will be presented with a list of entries containing jzip.
14. On each entry, right click and select Reset.
15. Restart Firefox.

Refer to this article on how to set your desired home page: How to set the home page.

You can install WinRAR or 7-zip to view rar files.

thanks, I will give that a go and let you know if i am successful

Read this: http://forums.mozillazine.org/viewtopic.php?p=10621697#p10621697

To install JZip without it hijacking your browser, read this: http://forums.mozillazine.org/viewtopic.php?p=10625375#p10625375

A better alternative to JZip is 7Zip, an open-source application that does not add all the crap add-ons and change your set-up (and the one that I use) is available from SourceForge: http://sourceforge.net/projects/sevenzip/

You need to update some plug-ins:

• Plug-in check: https://www-trunk.stage.mozilla.com/en-US/plugincheck/
• Adobe PDF Plug-In For Firefox and Netscape: Installing and Updating Adobe Reader in Firefox
• Shockwave Flash 10.2 r159: Updating Flash in Firefox
• Next Generation Java Plug-in 1.6.0_19 for Mozilla browsers: Installing or Updating Java in Firefox