Windows 7: Messed Up IPv4 And IPv6 Protocols

Hello,

I'm only a wannabee, so have patience.

I really want to learn. I had a guy set up a connection at an internet cafe. He changed some protocols with the IPv4 and IPv6. Now I have limited connectivity on my home wireless router. I have attempted to reset them through command prompt. IPv4 will reset but IPv6 says there is nothing to reset. The area for IPv6 IP info is blank and when I attempt to insert IP info it tells me the IP number is invalid. I don't have a restore point, so I can't do that.

What else can I do to reset that info?

Thanks in advance.

You're going to have to provide more details than that little bit you gave us...
What version of Windows 7?
Clean install or?
Your Computer specs?

I've got Windows 7 build 7100. It's a clean install. I've been using it since early May with no problems with internet connections. It's a three year old Toshiba Laptop, with a Celeron Chip and a gig and half of memory.

Everything was fine with my internet connections until yesterday with this guy changed my protocols to be able to use his wireless. Now I can't connect to any wireless network and I think it is related to the IPv4 and IPv6 protocols that he changed.

thanks!