data feed server question

 
Hi all, I've installed metatrader on two different computers. Somehow I get data feed from alpari on one and metaquotes.demo on the other, even though I used the same installation file downloaded from MetaQuotes. How can I change the server from alpari to metaquotes? Note that the Tools -> Options -> Server tab list only the alpari server. I also tried to uncheck the data center auto cofiguration and then adding in the metaquotes demo server, but then all I get contiunous beeps for login and immediate logoff. Any suggestions?
 
Input manually demo.metaquotes.net
 
Wow, thanks. Do you know of any other feeds that would provide European index and maybe share data? Alpari doesn't seem to have it.