Sometimes malware is not as easy as just un-installing it. If you have already tried the obvious control panel add/remove programs method and are not getting the sticky bastard to go bye bye there are other alternatives.
First off - if you cant turn off the toolbar or extensions as chrome calls them they will prob not uninstall or worse, perpetually send out to the internet for the backup executables and then just reinstall itself. So turning the thing off is the most important. While you are doing these things, disconnecting from the internet is usually a good idea.
If you cant get the thing to turn off via the switch, try running a program like ProcessExplorer - http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
If you find the conduit search modules or unwanted toolbars running, kill those processes. Try uninstalling again. Be careful using this, if you dont know what process you are trying to kill you could cause your system to crash or reboot unintentionally.
First remedy is the browser level clean. You can try disabling the add-on or toolbar, or completely remove it. Alternately you can completely reset your internet explorer back to factory defaults which usually clears up most problems. Under tools/options and advanced you can reset to default.
Second is clean up your temp files and browser cache. these sticky bastards like to hide in familiar places due to fail hackers so turn on your hidden files option in folder options from the control panel, go into the users or docs & settings directory, find the profile (username) that you are using, App data > local > temp. Delete everything in this folder. Nothing will ever be needed in here. Some may not be able to be deleted as some can and will be used by your system. Also run the option on the tools menu that allows you to destroy temporary internet files (which are housed in a separate directory).
Next is run a antivirus/registry cleaner/spyware scan trio. A program like Ccleaner - http://www.piriform.com/ccleaner will help destroy remnants of sticky malware especially if your spyware or antivirus software has found it. I recommend super anti-spyware http://www.superantispyware.com/ or malware bytes free anti malware http://www.malwarebytes.org/ or spybot http://www.safer-networking.org/ - sometimes these malware programs find thier way into your machine via a nasty virus and thus a scan may provide useful. If you dont have one get a free one. Best three are Avast & AVG & Avira. http://www.avast.com - http://www.free-av.com - http://free.avg.com
If those traditional operations fail to get you back on track, the last line of defense is diving into the registry. If you do not know how to do this you should not really try as you can seriously fook up your machine and just call your favorite nerd friend to come find the tricky bastard.
These toolbars are NOT that sophisticated and unless you have been infected with a root-kit type virus (one of the worst you can be infected by) then one of these remedies will work. Root kits have much much higher levels of infection and sophistication and in the unlikely event a root kit has you by the short and curly's the conduit search malware is the least of your worries....