Sorry, but the bug system is not the appropriate forum for asking
support questions. Your problem does not imply a bug in PHP itself.
For a list of more appropriate places to ask for help using PHP,
please visit http://www.php.net/support.php

Thank you for your interest in PHP.

I´ve got the same Problem, and many others too! 

I´m running PHP 4.2.2 with Apache 2 on Win2000 SP3 and I _have_ an original winnt\system32\msvcr70.dll, perhaps form SP3. I also have the php_curl.dll in the correct folder, all other modules work well this way! I also have zhe "real" curl run on my computer, therefor I needed the other required dlls in system32 folder, so if curl works, php_curl should work too! This _is_ a PHP-Bug! I Get the same error as described in the following:

<quote from php-manual: http://www.php.net/manual/en/ref.curl.php#AEN9715>
orangevwbus at yahoo dot com
05-Jan-2002 08:12
In win32 (Windows 2000), I couldn't get apache to start with PHP/curl support 'cause it said it couldn't find the php_curl.dll. Well it was there.
MSVCRT.dll was there as well, but after I ran the dll through "Depends", there's a new DLL for the Microsoft .NET stuff. It's called msvcr70.dll, and without it, php_curl.dll won't load.
I didn't want to load .NET framework on my machine (which msdn.microsoft.com suggested)
I did a google search and found a downloadable copy of the file and threw it in my %system%\system32 folder and all the lights and whistles came on.
d dot kingma at ContentS dot nl
30-Jan-2002 08:47
in addition to the files named above, you should also add the file libeay32.dll to your PHP directory. The file can be found in the dlls directory
</quote from php-manual>

And please have a look at http://curl.haxx.se/mail/archive-2001-05/0058.html 

rgds
Andreas