Vmail and Merlin:
Thanks for your advice. I will take caution. But here is the situation:
Vmail: I followed your instructions and found:
2---mtmcdai.386 files (deleted them)
1---mtm file (deleted it also)
Restarted the computer and the same error comes up, still referring to missing device file and errors.
"your registry or system.ini cannot find a device file"
press any key to continue.
I then press any key to continue, and computer seems OK and running fine. But the error still bugs me.
Also found in the regedit at the same time, the following in other files or folder
I got attacked by a Klez virus about 1 year ago, and I was able to use a virus removal tool.
Thanks for your support and advice.