Time Capsule Reset?

I have a Time Capsule, and I leave my house for about an hour, and I come back and try to connect to the internet and I see there is none, wirelessly. I check my Time Capsule, and the amber light is blinking. I connect to it with an ethernet cable, and it asks me if I want to set it up. I have backed up my computer and I have a bunch of other files on it I would prefer not to lose, anybody have any suggestions on how to get them back?

If you run Airport Utility in applications/Utiities folder then when your TC shows up select it and there should be an advisory telling you why you have the amber light.

I already went there before posting, that's where it asks if I want to set up my Time Capsule. It's as if I just took it out of the box. I am absolutely sure I didn't do ANYTHING to it.

OK - what type of internet - Cable or DSL
What modem and is it set to hand out DHCP
is the TC with Internet selected set to Connection sharing = Off (Bridge Mode)
your Mac Sys prefs/Network set to Using DHCP

and when u set it up initially was the final step to click the button bottom right saying = Apply

Ok I just took a chance and set it up again with new passwords and all that. All the stuff is still in there, sorry for the trouble.