How to convert my USB internet connection into Wi-Fi?

I have internet connection but from USB device that i connect to pc and then use dial up connection and connects internet but now i want to make it Wi-Fi so that more then one pc can connect, it there any option like connecting a Wi-Fi modem in between computer and USB or something that can work.
Really need help.

Would you upgrade your iPhone, or wait for the new one?

I currently have an iPhone 5. I've been pretty happy with it, except my power/lock button has stopped functioning and my battery life is awful. I'm now eligible for an upgrade through my carrier, but the iPhone 6 is being released in September.I'm somewhat hesitant to upgrade because rumors say that the iPhone 6 will have a larger screen, which I'm not sure I want. However, I'm sure the larger display will become the standard and I'll have to upgrade to that size eventually anyway if plan to stick with the iPhone. What would you do in my situation, and why?

Added (1). I suppose I should clarify that I'm considering upgrading to the 5s now, rather than waiting to upgrade to the 6 in September.

How to unlock an at&t Iphone 4s for tmobile without the original sim?

My dads friend gave him an Iphone 4s running IOS and he already had a Galaxy so he gave it to me. He restored the Iphone to its factory settings on the phone and gave it to me. Its at the activation screen and i trimmed my sim card down to an microsim and it says invalid sim when i'm trying to even get into the Iphone. I have been trying to find a reliable source to unlock it for Tmobile but i can't seem find one. I tried evasi0n but i don't have an at&t sim card for the iphone so it can't be jailbroken. Someone please help me

Added (1). its running IOS 7*

How to stop my 2 iPhones from being connected?

Recently bought an iPhone 5S "upgrading" from my iPhone 5. I passed my iPhone 5 down to my mom, but for some reason a lot of the info that we use on the phones gets shared between each other (I.e pictures, Siri, contacts, etc). How do I stop this from happening and stop sharing iCloud space?