[E2007] [TA] HTML disclaimer (inc. images) possible?

Hi everyone,

we have been using exchange for about 10 years now, and only now came the necessity of adding a banner to our corporate email.

we have exchange 2007, btw.

I have been doing heavy searching and found out that html disclaimers are possible in:

exchange 2000 - with smtpreg.vbs (http://msdn.microsoft.com/en-us/library/ms528023%28v=exchg.10%29.aspx) and EventSinkScript.vbs (http://support.microsoft.com/kb/317680)

exchange 2003 - with smtpreg.vbs (http://msdn.microsoft.com/en-us/library/ms528023%28v=exchg.10%29.aspx) and EventSinkScript.vbs (http://support.microsoft.com/kb/317680)

exchange 2007 - you have to write a transport-agent!

exchange 2010 - natively

exchange 2013 - natively

Why did MS forget about exch2007 html disclaimers, while all other editions this is documented and supported?

So my question is, is there an equivalente EventSinkScript.vbs for exchange 2007?

Some samples or someone that can make one?

thanks a lot for your time and help.