GD lib installed, but GD for Perl will not

[<prahn>]

Hi!

I am using MRTG for a while now, I installed it with the hint on macosxhints.com. Now I want to go further, but for that I will need also the GD package for Perl. So I start with:
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">code:</font><hr><pre>sudo perl -MCPAN -e shell</pre>[/quote]then
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">code:</font><hr><pre>install GD</pre>[/quote]The installer asks me about where to find the GD lib, I answer:
/usr/local/lib/
The "make" finishes, as I can see without errors. But then "make test" fails with errors (only 50 % of the test are OK).

I tried so many things and searched on google for so long, but do not get any better results... pleeeeeaaaaasssseee, somebody help me!

Thx.