How to get unwanted photos off the iPhone 4?

Somehow, when I synced my phone to my computer, the photos on my computer got onto my phone. It's taking up a lot of space and I CAN'T DELETE THEM WHATSOEVER! Is there a way to un-sync them? I need help!

Can I text him? The info is below?

I live in the United States and I have a friend who lives in Canada. I have Verizon Wireless. I don't have international texting or calling/out of country. I have an iPhone and so does he. Can we talk through iMessage without being charged extra.

ANY POSSIBLE WAYS TO UNLOCK SPRINT

I have a friend whose getting another phone and is giving me her iphone BUT is on sprint. YES i know i can't unlock it to tMobile because of the CDMA (or how ever it is) network it has and tMobile is different like all the other sim card carriers. IS THEIR ANY, ANY Way POSSIBLE TO UNLOCK! IDC IF I HAVE TO GO SOMEWERE, ITS A FREE IPHONE! Please!
(I think its an iPhone 4 or 4S )

How to know if i'm getting an iphone?

My birthday is coming up, and i told my parents that i want an iphone, and that is the only thing i want. I need a way to find out how to find out if i'm getting one. (I'm being extra nice and extra doing chores)

WHY WON'T ITUNES BACK UP MY IPHONE WHEN I JUST MADE SPACE ON MY MACBOOK AIR?

I just spent all morning deleting all my photos on file in my laptop (saved them in an album on photobucket) and all the apps I don't need and I'm trying to back up my iphone5 to itunes and it still is saying that my phone can't be backed up because there's not enough free space on my macbook air which is honestly impossible because I deleted So much. I barely have anything on here now.

What do I do now, because I don't want to have to go into apple because that's such a hassle.

Why won't my laptop won't find internet connections?

I was sitting on my computer one day, when suddenly my laptop lost internet connection. It hasn't been able to read any connections since. The modem/router is fine because every other device connects to our wi-fi just fine (desktop, iphone/iPad). I've already tried to solve using the methods on this site http://www.techsupportforum.com/forums/f137/solved-media-disconnected-message-in-ipconfig-220641.html and it doesn't work for me. I'm using a Dell Inspiron with an intel i3 core and Windows 7. Please help I need to use my laptop for schoolwork!

Added (1). I tried the answers below, but the only drivers available are for external wireless adapters, not the internal wireless adapter. The bqattery thing didn't work either. How could I tell if the Wi-Fi card is busted or not?