Recently mcfee cleaned some trojans from my computer but now I can't access the internet. What do I need to do?

Use combofix from bleepingcomputer.com, then download malwarbytes(you may need to rename the installer/setup to something like winlogon.exe to be able to run or install it) from malwarebytes.com or softpedia.com, then clean the rest of the virus with superantispyware and Hitman Pro 3.5 from softpedia.com/cnet.com and just in case you do have a rootkit on your system use GMER from majorgeek.com(Use gmer to scan and anything in red delete.)

Future Protection use this wizard to recommend security protection for your system:

http://www.techsupportalert.com/secwiz

or go to safe mode and then do the above:

To get into Safe Mode with Networking:

1. Log out and reboot your machine.

2. When the machine starts the reboot sequence, press the F8 key repeatedly.

3. Select Safe Mode with Networking from the resulting menu.

Click on the bottom where you see like a screen. Right click on it and click on the thing that says view available networks. Then refresh the list and look for your wireless internet.

download malware bytes n spybot search n destroy, both free. restartpc hit f8 boot in safe mode, run both them programs, resatr again in normal mode