All the servers are offline?

Whenever I start up Wow.exe(5.4.2), I login to my account, and it shows the number of characters(10), and the servers, however, I cant connect to the servers as they are all shown as offline.My characters are on Frostwolf. Please help!(I have been playing after 4-5 months)

Frostwolf was updated to patch 5.4.8.

Ah. So should I download the whole thing again, or is there an easier, shorter way?

Update: http://forum.warmane.com/showthread....nstaller-(6MB)
Helped me out; Thanks a ton anyone0 XD