Currently, I'm using
HJ-Split to split my files. Simple, easy and supports many platforms. It's a freeware file-splitting programs created by
Freebyte.com.
HJ-Split Screenshot(s):

You can download it at
Download.com.Updates:[01/19/08]Some of you guys has looking the
tutorial on how to use HJ-Split in Google. Ok, I'll show how simple it is to use this software.
How to split a file using HJ-Split?Let say you have downloaded a movie file from your office that have 800MB in size. Ok, we call it
Newmovie.avi. You want to bring it home and you have 2 CD-Rs with you. Now, follow these steps:-
Step 1Run HJ-Split and click the
Split button, and you'll see a red-white popup window. Then, click the
Input file button and
locate the
Newmovie.avi file that we want to split. Set file size to
500 Mbytes.Step 2Finally, click the
Start button. Wait until the process finished.
DONE.
By now you should have two split files that called
Newmovie.avi.001 and
Newmovie.avi.002. Newmovie.avi.001 will have
500MB in size and Newmovie.avi.002 will have
300MB in size. Now you can burn it into your CD-R.
Then, how to join a file using HJ-Split?Ok, you already at home right now and have 2 CD-Rs consist
Newmovie.avi.001 and
Newmovie.avi.002 file.
Copy them to your
Desktop or any folder. Make sure you copy and paste them in the
same folder or location. Follow these steps to join your files:-
Step 1Run your HJ-Split, click the
Join button and you'll see the purple-white popup window. Click
Input file button and locate the
Newmovie.avi.001 file.
Step 2Click the
Start button and wait until finished.
DONE.
The
joined file will be located in the
same location you place the Newmovie.avi.001 file. Right now you should be able to watch your favorite movie at your own computer.
Note: HJ-split is also useful if you want to
upload a large file to Google Pages, since it only can handle 10MB/upload file.
Hope this is useful for you guys!!!