4.03 is being distributed on several shareware/download sites such as this one: http://www.tucows.com/download.html?softwa...=197833&t=2
As for everybody else, NCH doesn't provide downloads of old versions of their software. I suspect this is to avoid software piracy. By keeping only the newest version on the website, cracker's would struggle to keep up to date with developing a working 'crack' or serial for each new release, and users looking for a crack would be hard pressed to find a download for the version it was made for.
Effective: yes, however the more that is done to stop piracy, the more of a nuisance it becomes to the honest paying customer.
However, I don't think NCH is mean.. and I'm pretty sure if you contact them (from the e-mail you used to purchase the product) and explain your situation, they may be willing to send you the old version.
