Hmm, well, if the suggested tutorials above aren't working for ye, here be the scrolling code I use for m'presets. Hope this one works for ye.
{
technique
{
pass
{
texture_unit
{
texture preset_1scroll.png
scroll_anim 1.01 1.01
}
}
pass
{
scene_blend alpha_blend
texture_unit
{
texture preset_1mane.png
}
}
}
}