It's unlikely that 10 year old, unrelated code you copy and paste from a site will do this for you. You will have to do some work. The example you have chosen clearly explains what it's doing. Reading the code and the instructions will clearly show you where you are going wrong in your assumptions.
Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
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<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
Want more info? How to link
or How to display code and escape characters
are good places to start.