Why won't my HP photosmart 7520 printer connect to my wireless internet?

I have comcast internet, Brand new out of the box HP Photosmart 7520 printer and it won't connect to my wireless network. I can connect my iPhone, laptop, and iPad all fine. I'm using a D-link DIR645 wireless router, I do not have MAC address filtering on. I have tryed connecting through the laptop, wireless setup wizard on printer, and Wi-Fi protected set up with the "push button option" I have called hp and they said comcast is to blame that my router is not set up in wireless G mode and on channel 11. Comcast won't help they just want to charge me to fix the printer. The printer finds the network very easily and i type the password in without any problems I even double checked the password to make sure it was correct. Any help would be greatly appricated.

How to fix my HQ (iPhone 4s) on YouTube?

How to fix my HQ (iPhone 4s) on YouTube?

Added (1). If I use the YouTube app I downloaded, all the videos r grainy and it doesn't give me the option of an hq button, but it does if I use the mobile site. The app used to always play the videos just fine. How can I fix it?

Why won't bosspy work on my iphone?

I have bosspy for my iphone i had it before on my old iphone, but for some reason on this one after i downloaded it i can't install it, i already downloaded 1mole.bosspy.com but when i click on it i can't install it can someone Help

Do t-mobile stores do contracts?

Am trying to buy a iPhone 5 or galaxy s3 but I want to get it with contract if I go to a T-Mobile store do they do contracts for T-Mobile and how much for a iPhone 5/galaxy s3 every month with contract(need to know how much a month with contract)

Contacts deleted when I turn off iPhone?

My iPhone recently has been acting up, every time I turn off my phone and turn it back on all my contacts are deleted. It's running at normal speed and its not like I drop it a lot or dropped it into water. What is wrong with my phone and is there anything I can do to fix it?

Wondering if iPhone 3GS Will be Good Enough?

I was looking for a phone that I can listen to music on, has decent talk and can play a few games. I was wondering if the iPhone 3GS would cut it. If you don't think it will be powerful enough then could you recommend me a smartphone for about AU 150