SSO with "SAP logon tickets" without using SAP NW AS JAVA

Hi

i am looking for a solution to use SSO with "SAP logon tickets" for SRM WebServices ( ICM / ABAP )

we use

- SAP NW 7.0 ABAP (ECC and SRM)

- Apache

- IIS

- Active Directory

BUT

we NOT use

- SAP EP

- SAP ITS

- SAP NW AS JAVA

is there a solution to generate "SAP logon tickets" from the ABAP Stack or IIS or ... or the best way for us - a own application ... ??

we plan to authenticat the user via Windows-Login to Windows Active Directory.

thanks for all ideas

best regards

roland dess