[Users] serweb error

[buxalex at libero.it]

Hello to everybody,

I am using openser version 1.1.0 and I am trying to install serweb. I know it is developed for a previous version, but I guess it should work anyway, may be there will be some minor changes to do. :o)

After the installation, when I run it I get the following error:
Function aggregate_metod() doesn't exists. Try insyall classkit extension. :o(( 
Where I can find it? At the suggested URL: http://pecl.php.net/package/classkit it doesn't exist. 
I am using Linux FEDORA 4 with PHP v. 5.0.4

thanks in advance
Alessandro