http://bit.ly/10C4jOy
1. Download iFile from Cydia.
2. Open iFile and navigate to the first page (the one entitled "/")
3. Then select "System"
4. Then select "Library"
5. Then select "CoreServices"
6. Then select "SpringBoard.app"
7. Then select "English.Iproj"
8. Then select "SpringBoard.strings"
9. Now you will be brought to a long list of code. You will need to search the text for recognizable strings, such as : "slide to unlock", "slide to power off", "Enter Passcode."
10. Once found, select "Edit" and change that text into what you would like for it to say instead.
11. Then select "Save", and close iFile.
12. Now you will want to respring you Springboard.
13. When your iPod respring is complete, the strings you changed will show!