Sure, the URL looks something like this "http://server/whatever"
By splitting on the '/' character, you will get an array of values:
1 - "http"
2 - empty string (there is nothing between the 2 slashes
3 - "server"
4 - ...
We want the servername, and since a PowerShell arrays start indexing from 0, we need to use the index 2 to get it.