Use WebClient,DownloadString to download the string contained within an online txt file stored on your FTP and populate your label's .text property with the resulting string.
i.e
[php]
Dim wc As New Net.WebClient
Label1.Text = wc.DownloadString("http://www.mywebsite.com/serverstatus.txt")
[/php]
You'll need to edit the URL obvs, mine was just an example.