@retalv, You're kind of confused there. I'm not quite sure where you're getting this information . OK, kindly read Tomcat's post above and the information below. HFSPLUG2.CMD does not modify any predetermined file. It only does what you tell it to do. That is, the file is called by the HFSLIP program at the end of the slipstreaming process right before the log file is written. If you want HFSLIP to do what you requested, simply create the plug-in file like this... HFTOOLS\HFSPLUG2.CMD IF EXIST HFTOOLS\AHFSLIP.TXT FOR /F "DELIMS=" %%I IN (HFTOOLS\AHFSLIP.TXT) DO ECHO %%I >>SOURCESS\I386\SVCPACK\HFSLIP.CMD We can't implement exactly what you told us because that would just be redundant.