I am sure the answer to this question is simple but how would I go about changing the name of a file. Specifically the extension. e.g. if i would want to change billy.txt to billy.jnk how would i go about doing that. I always thought I would just hit F2 and then change the name. I try that but fopr the most it just changes it to billy.jnk.txt. What exactly am i doing wrong. Some file types show the extension when i hit rename some do not. Any ideas?