This issue is noted in the Virus and Security Forum.
It's a pest that installed on your machine. You can make a copy of MSCONFIG.SYS to MSCONCON.EXE and run the copy.
Read these posts.
please can someone help me. i can't open msconfig, when i try to open it, i just opens for a second then dissapears. i have scanned my system with several online scans, i have also scanned with stinger as well as a few other spy removers. please can someone help.