I a CD in drive f: with these two files on the CD: 1- f:\p.exe 2- f:\f1.dat when i run p.exe it opens f:\f1.dat to read from it. any way I can set windows open another file (from another drive) when p.exe tries to open/read from f:\f1.dat transpatently (without the process being noticed)?! I tried symbolic/hard links and junctions (mklink) but they dont work on non ntfs drives!

Does the issue occur on other CDs or only on this CD? If it does not occur on other disks, the issue should be on the CD. However if the issue occurs on all CDs, please let us know if the CDs are burned by yourself. If they are you may try the following steps to remove third party filter drivers. Step1: Delete filter driver ===================== 1. Click "Start", in the Start Search box type "regedit" and press Enter. 2. Navigate to the following key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318} 3. Right click on "Class", click "Export"; please name the file as "RegBackup" (without quotation marks) and then save it to the C:\ drive as a backup. Note: In case we need to undo the modification, we can double click this RegBackup.reg file to restore the registry key. 4. Highlight this key, on the right pane, check if the "Upperfilters" and "Lowerfilters" values are present. If so, please right click on the values and select "Delete" to remove them. After deleting filter drivers, please reload the drivers. Step2: Reinstall driver ===================== 1. Click "Start", in the Start Search box type "devmgmt.msc" and press "Enter". 2. Expand "DVD/CDROM Drives". 3. Right click the listed DVD/CD-ROM, and click "Uninstall". Please uninstall all devices. 4. Restart the computer. The drivers will be loaded automatically.Arthur Xie - MSFT