cannot click on links

This is a known and documented issue from Microsoft. The link below has some recommended troubleshooting steps:

http://support.microsoft.com/default.aspx?scid=kb;en-us;Q281679&sd=tech

Clear your cache. Delete temporary internet files and cookies.

There may be programs running in the background interfering with the operation of Internet Explorer. If you have Norton programs running in the background, temporarily turn them off, including anti-virus, win doctor, recycle bin protect, and clean sweep. Does this fix the problem?

Turn off any firewall or ad-blocker.

In addition, download the new Microsoft Anti-Soyware and sweep the system to make sure malware isn't the issue. That is available here:

http://www.microsoft.com/athome/security/spyware/software/default.mspx

Perform a repair of Internet Explorer. From Control Panel select Add/Remove Programs. Scroll down to Microsoft Internet Explorer and highlight it. Click on the Add/Remove button. When the IE Tools menu comes up, select Repair. Click OK.

You can also access the IE Toolbar by clicking Start > Run and type

rundll32 setupwbv.dll,IE6Maintenance "C:\Program Files\Internet Explorer\Setup\SETUP.EXE" /g "C:\WINDOWS\IE Uninstall Log.Txt"

Use IE Eradicator to delete Internet Explorer.

http://www.litepc.com/ieradicator.html

Make sure you have downloaded the IE6 setup files first, but not loaded. Backup your Favorites folder.

http://www.microsoft.com/windows/ie/downloads/critical/ie6sp1/default.asp