ISV Config button enabling

In CRM3 when we wanted to enable ISV buttons all we had to do was to go to the CRM web Config and change the ISV elements value to the required value (Web). This would have displayed the ISV buttons.

But in CRM4 this is not the case. This has been taken from the web config and have embeded to the web site. I have given below a link which helped me to find this.

http://blogs.msdn.com/jannemattila/archive/2008/01/10/crm-4-0-and-isv-config-modifications.aspx

Thanks for the helpful link.