Extensions directory trouble for CURL and Sablotron

I am running PHP 4.04 on IIS 4.0/NT 4 sp 4 as a CGI. I am trying to run the CURL, DOMXML, Java, PDF, and Sablotron extensions. As of right now everything but CURL and Sablotron work. The .ini reads as follows extension_dir = c:/php4/extensions/ I have tried c:/php4/extensions c:\php4\extensions c:\php4\extensions\ I also have copied all the .dlls to both the winnt\system32 and \php4 directories and tried c:\php4 c:\winnt\system32 I am really having trouble understanding why it is only these two extensions that are failing to work. Any help that you guys could give would be greatly appreciated.