You shouldn't ever use a Wi-Fi hotspot with an infected computer or while attempting to clean a known infected computer. Public hot spots are open networks that are vulnerable to security breaches. Because they do not encrypt data, your passwords, email messages, and other information can be visible to hackers. If the infection is still on the computer then a whole lot more could come in AND go out because those are not secure.
Wait until you can get to a secure connection. Whenever you are ready just post the requested info and then we can work getting combofix off, and the rest of that McAfee junk so you can put on a good anti-virus program on there. For a firewall I strongly recommend the built in Windows 7 firewall, it is very good, plus doesn't require downloading of other files. For now though, leave it turned off also.