You will need to Google this.
Your post is a little confusing because the original error message refers to vmm32.vxd file is missing or corrupt. and then you go on to say that the resolution is to extract a new copy of Dibeng.dll.
The Vmm32.vxd file is used on the Windows 9x and ME platforms only. The Vmm32.vxd is a monolithic file that contains many different VXD files (Virtual Device Driver), much like a CAB or a ZIP file, but the references I get to a fault in Dibeng.dll are a General Protection Fault and this error message can occur if an incompatible display driver is installed on the computer
Has your friend replaced a video card or updated video drivers?
Google the phrase, "vmm32.vxd file is missing or corrupt" and the driver dibeng.dll for more advice.
I am trying to help a friend out. He went to bootup this a.m. and got an error message saying his vmm32.vxd file is missing or corrupt. I found what appears to be the remedy, and I included it at the bottom of this post. However, we got to step 6 and then could go no further. We had the Win98 disc in, booted up with floppy and we changed the prompt to E (which is the CD drive) and typed in DIR. It shows the various files on the disk, but when we try and access them (step 7 and beyond), we keep getting error messages that says bad command or file name. Any suggestions on what we can do please?
Thanks in advance for your help!
To resolve this issue, extract a new copy of Dibeng.dll from your original Windows compact disc (CD) to the Windows\System folder. To do this, follow these steps: 1. Insert a Windows 98 Startup disk, and then restart your computer to a command prompt. Select Start computer with CD-ROM support.
2. Note the drive letter assigned to your computer's CD-ROM or DVD-ROM drive.
3. Insert the Windows 98 CD-ROM into the CD-ROM or DVD-ROM drive.
4. At the command prompt, type C:, and then press ENTER.
5. Type CD\Windows\System, and then press ENTER.
6. Type rename dibeng.dll dibeng.old, and then press ENTER.
7. Type Ext, and then press ENTER.
8. At the Please enter the path to the Windows CAB files (a message, type drive:\win98 (where drive is the drive letter that you noted in step 2), and then press ENTER. For example, type
and then press ENTER.
NOTE: If you have an original equipment manufacturer (OEM) installation of Windows, the cabinet (CAB) files may be located in the following folder:
9. At the Please enter the name(s) of the files(s) you want to extract message, type dibeng.dll, and then press ENTER.
10. At the Please enter the path to extract to ("Enter" for current directory) message, type C:\Windows\System, and then press ENTER.
11. At the Is this okay? (y/n) message, type y, and then press ENTER.