S. U . M

StartUp Manager, or SUM, is a gui tool for changing settings in the bootloader and splash screen in ubuntu

Software Details
Application name: StartUp Manager
Current version is 1.0.2
Features

Change: Grub timeout, default boot title, number of kernels in bootloader menu, enable/disable boot option for memtest86, enable/disable boot option for "rescue mode", if the default boot option should be automatically updated, bootup resolution and color depth, grub menu colors and background, and usplash theme.

Create "rescue floppy"

Change visibility of: Grub menu, colors, background image, usplash and usplash text.

Password protection: Password protect grub menu from editing, Password protect "alternate" boot options, Password protect old boot options

Themes: Install new grub backgrounds(either from a png, or a correctly sized and colored .xpm or xpm.gz), Remove grub backgrounds, Install new usplash themes(from a correctly made .so file), Remove Usplash themes

so, if u found a hard time in changging your usplash, just try to get .deb package from here then just simply unpackage and install it using "dpkg", orherwise u may choose this nice tutorial "USplashCustomizationHowto" and build it from scratch ..