Sounds like your connection is dropping due to interference.
Linksys router login is 192.168.1.1, which you need to type into your address bar.
That should bring up the Login page, if you set your own password you'll need it to access the router, if you left it at default, it should be one of
these:
Default user names:
Linksys BEFW11S4, WRT54G: admin
Linksys EtherFast Cable/DSL Ethernet routers: Administrator
Linksys Comcast routers: comcast
All other Linksys routers: [none]
Default passwords:
Linksys BEFW11S4: [none]
Linksys Comcast routers: 1234
All other Linksys routers: admin
Once in, look for a wireless settings section.
Try changing the channel, if you're on 6 try 11 or 1 etc.
To set up security, you'll need to know what types of encryption your wireless adapter supports, WEP, WPA, WPA2 etc.
WPA2 is the most secure but you'll have to go with whatever your adapter supports.
Bear in mind that any other devices that need access to the router, other PCs, consoles etc, will need to support the same encryption.
Once that is decided, set the encryption standard and create a passcode on the router. Then do the same on your PC.
If you can't get into the router, you'll have to reset it, as described here:
www.tech-faq.com...