C:\Program Files\NuSphere\NuCoder\loader\Windows\x86_NTS_VC9 (I'm using the file from this folder)

[22-Aug-2011 17:21:50] PHP Warning: PHP Startup: NuSphere PhpExpress: Unable to initialize module
Module compiled with build ID=API20090626,NTS,VC6
PHP compiled with build ID=API20090626,NTS,VC9


PHP INFO
Compiler MSVC9 (Visual C++ 2008)
Zend Extension Build API220090626,NTS,VC9
PHP Extension Build API20090626


If I use different version I get this error
[22-Aug-2011 17:34:06] PHP Warning: PHP Startup: Unable to load dynamic library 'C:\Program Files\Zend\ZendServer\lib\phpext\phpexpress-php-5.3.dll' - The specified module could not be found.
in Unknown on line 0

Any suggestions ?

your php is VC9 while you're trying to load VC6 module, don't you see the difference?
As of the other "error", please make sure that it's the latest version of PhpExpress (build 3031)
Some builds of php has problems loading VC9 modules without manifests and it's what we've added in 3031.