File I/O And Registry :: Pasing A Sentence With .Substring ?

I am working on creating a program for my Visual Basic Programming class, and I have hit a snag. My problem is that we have a text file that lists the countries of the world, along with their population, area, capitals, etc. Well, each country is listed as one line, with all pertinent information following on that line. Some information is unneeded, like the Capital or the Continent. I have set up my variables for each piece of the line, and am planning on using a Do While (sr.Peek <> -1) Loop to read through the list.

My problem arises with .SubString. I can get it to parse the first word just fine by saying

Code:
variablename.Substring(0, n)
n being my variable for finding the .indexof the blank space.

After the first word, I can't seem to get .substring to parse any words or data from the file after the first word.

Code:
Option Strict On

Public Class Form1

[CODE]......................