but how does this make my text scroll
1) you need a bitmap, not just a character string
2) sketch of basic code to display:

colindex = pos
for (count = NumberOfCols; count != 0; count++; colindex++)
{
output colbuffer[colindex]
if (colindex == buffer length) colindex = 0
}

to scroll
pos++
if (pos == NumberOfCols) pos = 0;

Erik