desperate for help!!!

stop!

how many comps you have?

BUT if you have only one this Dell and can't go wireless how you can be online? What I lost?

click (not sure, maybe twice) on proset icon to pop-up proset util. there will be your unsecured wireless network, select it and push disconnect (somewhere down from network)
Then go Start > Settings > Network Connections > LAN network (wired, with name of your wired LAN card and see what happens)
!!! In case it wouldn't connect to wired LAN connect wireless (like you disconnect earlier) to be online again.
But if you will connect wired - it could be better for now.

please confirm this password is 5 or 13 symbols long

ok now go to Intel proset, choose (i really don't no now) network you have (with name of yours) or choose create new network. Make settings: SSID (name the same as SSID in router), find security and write down this key for WEP key position (from page you have). and try to cennect to this network but first of all disable LAN connection (you allways can come back for LAN by enabling it)

I see. I stll here

under the network connections you can see icons of LAN (Local Area Connection). How many you have and whats names of it you have?

On page with security you have position (like table) with WEP. There must be Key 1, Key2, Key3 ... What you have there?

now it not for me but for you! could you write down on some paper this key? if yes do it.

you can disable. it possible network with FireWire adapter you have (small connector like small USB)

ok I'll try to explane your router stucked when you making some savings. am I right? if yes - it better to reset it, but I'm not sure about your broadband connection settings because resetting will take it to factory state. If somebody made something after factory (for example your internet provider) you'll be without internet and I can't say to any.