COM, ADO, PHP4 and SQL Server

Hi There I creating the ADO COM objects in PHP and using them to access a SQL Server database. This is all working fine. One thing I have noticed, however, is that the connections to the database never get released. If I run sp_who on the SQL Server database, I get a new connection everytime, which is not killed after my script has finished executing. This obviously causes a problem as every time I access a PHP page, a new connection is created and I end up with tons of them. Any one else had this problem or have any ideas how I might resolve it? I don't want to use the mssql70 extension, since I like the database abstraction of ADO. Thanks in advance for any help Cheers Peter