On Topic:

I know this thread is kinda dead (;
but I gotta give back, after receiving so much from it.

The solution mentioned here works.
Using /bin/busybox sh -c 'echo sh /etc/hildon-welcome.d/lalala.sh | sudo gainroot' works.
But, you need the desktop to refresh, for the icon to be up to date,
I have a script killing my desktop which I wrote some time ago ( on intention ) for cases when it gets stuck, I just used it - and it refreshed and everything works.
Another way is to just reboot the phone.

Thanks for all the info guys.
Now I have 2 icons on my desktop, "OC 600 MHz" and "OC 900 MHz" which I can just press and toggle to the wanted OC.

Off Topic:

If anyone wants them, they are for the titan ulv kernel,
attached below with icons. (inside zip file).

Instructions :
To get 2 icons for the desired overclocks download the attached files, and put them in the right locations :
1. Icon files should be in ./usr/share/icons/hicolor/64x64/hildon/
2. .desktop file should be in /usr/share/applications/hildon
3. .sh files should be in /usr/share (this is where I put them, as they are small and I don't care about the size they take.
4. You must have rootsh installed.
5. Don't forget to "chmod 777 <filename>" the .sh files.