To find out what is in your Windows CAB files, use the Extract command to create text files that list the contents. Open a DOS window and navigate to the directory where your CAB files are located, usually D:\Win95 if you have the Windows 95 CD. Then type the following command:
extract /A /D win95_02.cab>C:\Cabs.txt
extract /A /D mini.cab>C:\MiniCab.txt
extract /A /D precopy1.cab>C:\PreCopy.txt
This will create the three text files in the root directory of your C:\ drive. Open those files to see what is in each of your CAB files. You can use a similar method to get a single file out of the CAB file it's in. Most of the files are in one of the win95_??.cab files, so you would use the following, again starting from a DOS window in the directory that contains the Windows 95 CAB files.
extract /A /L C:\Temp win95_02.cab file.ext
Where C:\Temp is a temporary directory on your hard drive and file.ext is the file you wish to extract. You can also use the Microsoft PowerToy Cabview to extract files from your Cabinet files. You can find Cabview and the other PowerToys at: http://www.microsoft.com/windows95/downloads/contents/WUToys/W95PwrToysSet/Default.asp
This utility is built into Windows 98 and higher.