Transformations in php mapscript

[Ben Madin]

G'day all,

I am looking at some php scripts which load php_proj.dll and then use  
pj_init and pj_transform.

However, when I load the page I get this message

Warning: dl() [function.dl.html]: Unable to load dynamic library  
'\ms4w\Apache\php\extensions\php_proj.dll' - The specified module  
could not be found.

followed by :

Fatal error: Call to undefined function: pj_init()

which I assume I need before I get to pj_transform (it fails anyway)

As you can tell, I have installed ms4W which must be without question  
the easiest Mapserver setup around, but it didn't include php_proj,  
which I have obtained from elsewhere.

I have searched the lists, read all the proj documentation etc, but I  
don't seem to be able to get the library to load (I assume it is  
required to make the pj_ functions work?)

thank you

Ben