If you want to display HTML like tags, use <code> tags, otherwise they will not show.
Like: 
<!--begin tagone--> and <!--end tagone-->

[download]
If I understand your questin correct, you want to insert tags in your html files, run them through a perl script where you repace the tags with the contents from another file.
You will not need to use any database just to replace some part of a file with some part from another file but if your site is heavily updated by many persons it may be an advantage to have one.
Using a database from the begining will reduce work for you later, if your site grows and you realize that you need one.

/brother t0mas

In reply to RE: Automatic updates on sites. by t0mas
in thread Automatic updates on sites. by damian

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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