Part It 

This attractive, easy to use 32 Bit file splitter can split any number of files and/or complete folders into a user-defined number of pieces or sizes, and across multiple diskettes, including zip disks, jazz disks, super disks, etc.
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PalmTree 

Password protect, lock and hide folders or directories and their subdirectories and files on your PC. Encrypt files with BLOWFISH, CryptAPI. Hide messages in photograph. Stealth email. Encrypt password files and bank. File splitijng.
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Slice-n-Save 

Slice-n-Save is useful when you want to split a file into smaller files. Original file is restored with a single click. One single file can be split into unlimited number of files. The slices can be recombined using a program with many options.
file splitter utility