There are two ways round the problem. Both methods filter the lobby to only show certain servers by using a filter.
I tried using the letter R but got mini dump so for race department use the letter N. This filter will also show you old-man-rcing.de servers.
To see Weisbierbude use W.
To see 100Mbit use "100" or just W for their WTCC server.
To see C-ONline servers use N.
Do not use O for CONline or Old-man-racing.de as this will give you a mini dump.
Method 1:
Start Race07
From the main menu choose World Ranking.
Mouse click 'World Leader Board'
Mouse click 'Ranking Servers' (when it goes blue).
Mouse click 'Filter list'
Enter the letter N in (game name contains text)
Click back until you get to the main menu. You have to be quick!
Select Multi player, Internet game - do this as fast as you can otherwise the filter will be lost.
Method 2:
If you are not registered for World Ranking or the above does not help.
Start Race 07
Put your computer offline. If you don't know how to do this via Microsoft Windows then just remove the network cable or temporarily turn off your WIFI or router.
Return to Race07 and go multiplayer
Choose filter list and in the the field "Game name contains text" type "N"
Go back to apply the filter.
Put your computer back online.
Go multiplayer and this time it should show servers without the mini-dump (it will only show the servers that have a W in them).