Airport Extreme/Express...need help...

A few questions: what are the main differences between the two? Is it safe to buy either right now? How many users can the Express handle?

The Express seems like a good deal, but I'm concerned about the range. I'd be upgrading from a Netgear Wireless-G Router WGR614 v9 that has been having problems lately.

Thanks!

 

Thank you!

 

Ok, I'm back and in need of more help. I purchased the Airport Express, had some trouble setting it up, and it works now, but only for a few devices; a 2012 MBA and 4th-Gen iPod Touches. The devices that don't include an Apple TV (2011), a 2008 Aluminum-unibody MacBook, a 2007 Mac Pro, and a 2nd-Gen iPod Touch. Anybody know how to fix this?

 

Automatic. And my printer doesn't work anymore either.

 

Strange. Maybe it's because my Airport Utility isn't on the latest version? Because honesty, that's what it says. It says Radio Mode: Automatic, then below it, 802.11a/n - 802.11b/g and 802.11a - 802.11b/g. Which one should be selected?

 

Neither. It's on Automatic (whatever that means) like I said, but below the selection bar it says 802.11a/n - 802.11b/g/n.

 

Here:

 

The network appears on all of them. Full signal strength is shown (only exception is the Apple TV - it won't connect for some reason), but there's no internet. Safari never loads anything.

 

Yes. It says "Connect Using: Ethernet".

 

Well, get some sleep! And thanks for the help so far! Hopefully I'll get this figured out soon...

 

Ok, well I did some messing around and now everything is working except for the printer, which shouldn't be to hard to fix. Thanks for all your help!

 

The Ethernet/WAN cables were in the wrong spot, so I flipped those two around, updated the Airport Utility and checked the setting to allow setup over WAN.

 

Ok! So my printer still isn't working...it's an HP 2510. I have a separate printer downstairs (another HP) that is connected wirelessly to the Airport Express. Before I changed routers to the Express, my HP 2510 upstairs worked wirelessly with my Macbook and Macbook Air. I could also change preferences and print on the other HP printer if I needed to. Now neither Macbook/Air will print wirelessly from the HP 2510. They will only print if connected by the USB or ad-hoc (but then I can't print while online).
I've tried just about everything posted...
Any suggestions?