The W3C Validator found 24 errors in your coding ... you can click here to see them ... Please note that this is on the "home" page only ... you should check the others yourself aswell ...
Then won't you add some rollovers to your main-nav ... I think that'd make it look a little better even ... Then you could also disablr the link of the page that a user is on, for example, if a user is on the "window cleaning" page, you could disable the "window cleaning" link and make it another colour (or rollover state) ... that way, users will know which page they are on, and they won't redirect to the page that they are already on ...
On the "home" page there is a huge gap in the content right below the words "You may also apply for a free listing for your company on WindowCleaningDirectory.net!" I think you should remove that ...
Then I think you should switch from using tables and go to using CSS and DIVs to lay out your pages ... which makes editing a lot easier at the end of the day ...
Again on the "directory" page there is a big gap below the picture (map of USA) which can be removed ... Also on the "Information" page below the words "Rain may lead to slippy surfaces which inturn could cause fatal accidents."
On the "contact" page you may want to validate that form a little bit better ... adding an email validation checker ... I just sent a message using an email address of "rt" ... just maybe check for an at (@) and a dot (.) aswell ...
I think DPZero is right in the fact that you need an image for the heading aswell, just tospice things up a bit ...
Let's leave all our *plum* where it is and go live in the jungle ...