I would'nt touch the wlan card app, i would delet all of norton symantic product's, you can find the tool here
http://uninstallers.blogspot.com/ plus lavasoft adware can go to and spybot S&D, there are tools to clean them up at the site i supplied, later you can replace these scanner's with malwarebytes which is far better.
Nero can be disabled from starting up auto, do this through (ccleaner-tools/startup)
If you can find cyberlink stuff in startup's this can also be disabled, it will start whenever you click on it anyway
I also dont bother with java auto update checker myself but that one is up to you
The only option's in ccleaner i dont have ticked are- auto complete form history, window's size/location cache, user assist history, wipe free space.
Under -option's/setting's you can change the secure deletion to gutman 35 pass for a better clean.
That is a fair bit of stuff to get you started for now and will definatly lighten the load on your system, the main issue is getting rid of those other av and spyware product's i mentioned.
At some stage it would also be advisable to update your service pack to sp3 and install ie8 for security reasons.