Image Verification clarity issues

I have now got the User Registration Pack Working more or less as it should. However, the image verification is very hard to read - not like the one in this "Post a New Thread" page. How can I change this so that it is more easily read - i.e. clearer like above.

Have a look at:
CAPTCHA Settings in:

contact_form_sp_globals.pdf

Thanks for the link but I am frightened I may do something which makes the situation worse. For example the link shows $WAGLOBAL_Captcha_Noise = "FFFFFF" ; Specifies the hexadecimal code for the distortion used over the Captcha characters. Note that the “#” character is not included. I have no idea what the "FFFFFF" should be changed to to reduce the noise. I am assuming that all these changes are made in the WAVT.CaptchaSecurityImages.php file. I would really like to have something like the one used for this form but need some guidance. Can you help please as I am losing customers who get fed up with not being able to read the code and then have to redo the registration submission.

You can change the frequency of the noise with:

&noisefreq=20

The default frequency is 50 and it can be 0-99 (although if it already has too much, you would want something less than 50)

If you give us a URL where your page is I can experiment and find good settings for you.

Thank you that would be helpful. The url of the page is users_Registration.php. Could you also give some suggestion regards the background and text colours.

These are all of the configurable values and their default values:

width = 120
height = 40
characters = 5
bgcolor = FFFFFF
textcolor = 000000
noisecolor = 000000
font = Fonts/MOM_T___.TTF
field = 1
transparent = 0
bgimage =
gridfreq = 50
gridcolor = 000000
gridorder = behind
noisefreq = 50
noiseorder = behind
charheight = 75% of height

On your page you have an image src of:

MOM_T___.TTF

most of these are the defaults, so you might as well just have:
WAVT_CaptchaSecurityImages.php?width=200

If you want to have less noise you can do something like:
WAVT_CaptchaSecurityImages.php?width=200&noisefreq=20&gridfreq=20

If you want to change the background color to red you would use:
WAVT_CaptchaSecurityImages.php?width=200&noisefreq=20&gridfreq=20&bgcolor=ff0000

and if you want to change the text color to green you could use:
WAVT_CaptchaSecurityImages.php?width=200&noisefreq=20&gridfreq=20&bgcolor=ff0000&textcolor=00ff00

Hopefully you get the point... you can really configure just about anything... click the links to see the full path and example result from your site.

Many thanks Ray - most helpful