Creating A BCO Format File

I have AdventureWorks installed. I am using SQL Server 2005.

I need to import some large tab delimited text files into SQL. From the research i did I thought that using BCO would be the best solution becausr I will have to import these files and export in the same format.

I am attempting to follow the example at:
Creating a Format File

http://msdn2.microsoft.com/en-us/library/ms191516.aspx
B. Creating a non-XML format file for character data

In my command window at C: I enter:
bcp AdventureWorks.HumanResources.Department format nul -c -f Department-c.fmt -T
I was expecting to be prompted with questions about the source file and have a format file created. When i press enter nothing hallende. No errors. Nothing.

Can come one give a beginner the step by step on how to creat the format file and use it to import (and export would be nice too).