Does my DSL modem need to be replaced?

My DSL modem is probably about 7 years old (that's a guess) and it runs well with the two computers that are connected to it through the actual Internet cords (the Internet is sorta sluggish but the main problem is the computers are also old and cluttered which contributes to other slowness… )
Anyway, the problem isn't the computers Internet, it's the wireless Internet. I use the Wi-Fi for my iPhone and it works well the majority of the day but maybe once or twice per day the Wi-Fi either shows up on my phone and says "unable to connect to this network" or shows up as connected but doesn't load anything… I would blame my phone, but it also does this on the wii, the Xbox, and other peoples wireless devices in my family. I've found that by turning the modem off and unplugging the wireless router for a minute or so solves the problem… Temporarily. Until the next day when it repeats itself.
My phone will sometimes show the three bars for a strong wireless connection and not actually be connected but the Internet on the computer will work fine… I've called AT&T about this and tried to explain to them how the signal shows up fine and appears to work, but isn't actually working and they say the only solution is to buy a new modem (obviously they would love to get $100 from us). I just feel there might be other cheaper solutions to this problem?
Does anyone know why the modem is doing this? Is it because it is old and needs to be replaced?

I found an iPhone, can I sell it?

I found an iPhone on the ground, put an advertisement on Craigslist, which ran for 30 days, no one got back to me.So, if I sell it are there any legal issues I should worry about?

Any way to view all youtube history on Iphone?

So, as far as I can tell the youtube app only saves the last 25 videos I've watched. What I'd like to do is see the history for videos older than that because I'd like to avoid saving every video I might want to show friends later to my favorites. I have enough of those as it stands. Is this at all possible?

Got my iPhone wet. Insurance

Okay so I accidentally got my iPhone wet. Everything is working except the little minus button is a little messed up (which isn't a big deal at all) and the flash will not turn off. I've deleted all my apps that would use my flash except for my camera, which I can't delete. I can't get the flash off, even when I turn off the phone it stays on. I was going to go to the apple store because I have insurance on my phone so I can get a replaced one. But I just read somewhere they don't insure water damages? What do I do? Is there anyway I can turn off the flash? Please help. Should I restart the entire phone? I read somewhere that probably won't work but I really don't know what to do. Please help. I was thinking if I went to the apple store and maybe just didn't tell them I got it wet, I would just say the flash for some reason got stuck on

I can't get iTunes to install on my computer?

My computer froze while I was running an update on my itunes a month ago, when I restarted my computer itunes could no longer run, I've tried to do everything to reinstall it, I uninstalled and reinstalled and it began to give me error messages saying I had "insufficient privileges", I ran the install as an administrator and it still gave me the same message, I tried to download the installer on a different computer and transfer it via a flash drive and it gave me the same message, I tried transferring all the itunes files needed to run it from one computer to my own and still no luck, I tried downloading it through a torrent and it worked but it was iTunes 8 and I have an iPhone so it won't connect to anything before 9, an I could not find a torrent for any recent itunes (I'm sure because its a free download); I'm an avid music downloader so the fact that I haven't been able to update my music in a month is absolutely killing me, and I have a couple trips coming up and need to update my phone before I go if anybody can give me a solution it would be greatly appreciated!

Why isn't there an official PSN app?

Xbox Live has an official iPhone app. The "My Xbox Live" app. Why hasn't Sony created a PS3/PSN app? Something that lets PS3 owners to send messages, add friends, etc.

Looking for long iPhone games?

Any games you know of that are going to last me a long time? Preferably not puzzle games. I already have Aralon and Dead Trigger, and I'm not interested in Phoenix Wright.