There's no need to be impolite. I'm certainly not criticising your work; I was wondering what benefits your tool offered over those which already exist?
If you have "Word" on your PC, an excellent alterative is Stingo's Word Macro (search the forum for it) which, in addition to removing newlines, does a number of other tidying up operations too.
A tool that I've used myself is a little command-line freeware app called "textify" which offers a range of nice formatting options for text files (eg leaving blank lines between paragraphs, no blank lines but indentation, or wrapping up the text file in "<P>" HTML paragraph markers. A Google search will find it.
Another much more sophisticated tool is "Gutenmark" (
http://www.sandroid.org/GutenMark/) which has all sorts of facilities for converting plain text to marked-up HTML.
Doing a Google search for "freeware newline remover" will show many more.
What facilities does your tool offer?