HJSplit for Windows is a freeware file splitter which runs on all 32 bit and 64 bit editions of Windows. HJSplit supports file sizes of over 100 Gigabytes, it can split files, join/recombine files, create MD5 checksums, compare files and "run without install". HJSplit is also fully portable: you can run it directly off a DVD, CD or USB stick.
HJSplit for Windows does not need to be installed nor does it depend on any special DLL's. Just extract the contents of the zip file into a directory of your choice, and start the program by double clicking on hjsplit.exe.