ASP code encryption

[itHighway2007]

I have developed a real estate software (http://www.ithighway.co.uk/online_real_estate_application.asp)and I want to encypt few lines of ASP code so that it becomes difficult for a user to edit the code and change copyrights.

Example:
<%
CONST txtUrl = "itHighway.co.uk"
CONST txtTitle = "Real Estate Software"
CONST txtDatabase = "MS Sql Server"
%>

How can I encrypt only first two constant variables?

Any idea, any help will be appriciated.


Thank you.