Cineplayer problem

System Information

XPS M140 Laptop

Dell Inc. MXC051
BIOS: Dell Inc. A04 03/13/2006

TSSTcorp DVD+-RW TS-L532B [CD-ROM drive]
Dell - CinePlayer

My DVD player doesn't play DVDs. This became a problem after I got rid of the Sonic Update Manager and registry references.  I even ran the R143248 Software Patch/Upgrade and the http://tools.roxio.com/support/dell/isum_hotfix.exe
patch.  I ran the isum_hotfix.exe after trying the R143248 since I found that afterward.  The date on the _ispmres.dll shows 6/10/2005 6:44PM in the UpdateService folder.  But I still can't play DVDs.  Even Microsoft Windows Media Player can't play the DVDs.