unable to load mssql extension library

[it_is_spatial]

I'm moving an application from a testing machine to a live server. Everything is working properly on the testing machine but I am unable to get the extension modules to load on the live server. I double checked to make sure the extensions=mssql.dll was uncommented and that the extensions path is set correctly but it still gives me an error 'unable to load dynamic library c:\php\extentions\mssql.dll'. I've got 3 libraries that load automatically and 2 of them are giving an error. Not sure what the problem is. Like I said everything works fine on the testing machine.

I'm using PHP 4.3.3, IIS 5.0

Any ideas?
Thanks

[TheDefender]

I know this is going to sound silly, but sometimes kicking back to basics fixes the strangest of problems...

Have you tried restarting the IIS service, and it's related services on the host machine?

[it_is_spatial]

Yeah sometimes it's the silliest things. I searched on it for a while and I finally uninstalled php and started from scratch. Pulling my documentation out again I noticed that it requires the MSSQL Management Console to be installed on the php server for the module to work. All is well. Thanks for the reply though.