[Ham-Computers] Web site question

[WØQFC]

I have a minor problem with my web site that I am unable to resolve:
When I view some pages in IE (have not tried any other browser) the URL 
displayed in the address bar shows this
http://www.w0qfc.com/computer%20stuff.htm
When I display some of the other pages, the "%20 does not show up. If the 
page title  is more than two words, the %20 shows up between each word.
I have checked that the file names are the same on the page as they are 
shown in the folder contents pane of the publishing software (FrontPage 
2003).
Also, I have made sure that the page title is written and spelled exactly 
the same as listed on the folder contents list.
Any ideas out there?
Gene, WØQFC
Spring Hill, Florida
WEB SITE:
http://www.w0qfc.com