scrolling text in 7x5 dot matrix led display.

hey, im currently working on a project with 7x5 using PIC microcontroller. I need to scrolling texts in 7 cascaded 7x5 dot matrix displays. Does anyone have any sample codes or algorithm for it? I already did something which displays 5 characters in 3-7x5 but it just wouldn't work if the 7x5 is already 7. What my program is doing to to just turn on one of the 35 columns at a time and send the coresponding bits on the rows. If you want to see my code and see what's wrong, I'll be very glad to show it. Thanks!

check out these links

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and

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those apply to only 1 5x7 I need to scroll text in 7 5x7's. do you have any idea?

U can modify the circuit with a serial-in parallel-out shift registers (74LS164) to drive the cathode lines. and u ase the same data lines common to all the displays. U can connect 74LS164 in cascaded to get any number of output you require.