One more note: your problem is much more elementary than handling the database. Before writing data to the database you need to have a script accepting (decoding) the data obtained from the form.
Ladislav - thank you. It is apparent, that what afsanehsamim is missing is the basic knowledge of how webserver stuff works between the client and the server. Examples at rebol.com are pretty straightforward. The only chance is to really create a simple example for him ...
Create 2 files. Call the first one e.g. cgi-test.html, and upload it to your server. The only thing you have to change is the link to your .cgi script in there:
Create a second file, called cgi-test.cgi (it has to align to how you name it in the above source file). Upload it to your cgi working directory. Remember to change the first line to contain the path, where your REBOL executable is placed:
but afsa, honestly - it does not even belong to the database group, but to Rebol School group - you seem to miss the basic understanding, of how CGI works on the server. Your problem is not in getting the value into DB, but handling CGI stuff in general. In above example, what you would put into your DB would be values/field ...