Desperately need help with Captcha

[supernick]

Hi,

 

Kinda new here but looking for some help, users seem experienced and friendly.

 

My problem is:

I'm running Postnuke on my server, and have had problems with bots. I need a method of preventing these bots in registration, as email confirmation doesn't seem to deter them. I was trying to get a captcha in my PHP form but I just can't seem to get it..

 

Here is a link to the file i'm trying to alter, it's part of my registration form module:

http://www.electronicsathome.com/war/user.txt

 

Here is where I need to get my captcha in:

http://www.electronicsathome.com/UserReg.html

 

Everytime I try to add some code, it just doesn't appear or work properly.. Tried many things like securimage and home made code.. I'm not fluent enough to understand why it's not working and was hoping someone had an idea or a different idea for bot preventing.

 

PS: I tried the dpCaptcha module hook for Postnuke but it don't work either..