when at the menu for the servers go to filter then check off the one with the mod selection nect to it. In that box that drops down select esforces and then click filter. Then click update. when playing other mods make sure to re-filter back to other mod types by selecting the type u want. This filtering will also shorten the list of servers greatly. Also to see the ping of each server and not just the green dots, right click your Half-Life short cut and where it says hl.exe highlight it and put paste this over it C:\SIERRA\Half-Life\hl.exe -dev -console -numericping.
This is much beter than the dots