Anyone want to help me mod my phone? Its a LGdlite/GD570.

A little while ago, I found a file that was made when the phone accessed the microSD,to log the last song played. If anyone would like to see them, I'll put them
up. I want to mod the theme,(add colors&designs) and have the text messages saved to the microSD. (microSD is 16gb) I can work with Windows or Ubuntu. The phone can view .txt files.
Here's what the phone left on the mircoSD fs:/card0/audio/music/01 - meds (feat.vv of the kills).mp3

I came up with an idea.
Make a script to change the default save location of the text messages,to the microSD.
But I have no idea how to script....

To change the theme,I think I'll need to change what happens when you connect to a computer. Maybe have something to access the phone's main files, I imagine that adding colors would be simple enough.

So is anyone good at scripting,or know anything that might of help?

The current phone's software is kinda,useless. I mean, it can hold 1000 contacts. But only 500 texts. You'd think they'd allow texts to be saved to a microSD but no, its all being saved to the phone. They released a gray model of the phone...with an updated U.I. And they have the "Software Update" which only allows you to check for an update every 24hours. But since the release of the gray model, there has not been a update. So I've decided to take matters into my own hands...I am not too concerned about it becoming bricked.

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