> However, I personally consider it to be unethical to either set back the clock
> or to patch out the checking in order to circumvent the author's intended
> restrictions on a trial version of a software package.
>
> IMHO, if the software is worth using, it is worth buying.

Note, further, that the software activation was obtained by filling out
a license agreement form on Hitech's web site (or otherwise sending HiTech
an agreement); by requesting the serial number you have indicated that you
agree not to use the software for purposes other than those indicated.