Table LED Matrix, Weeks of debugging, column problems

[mekohler]

I don't think using the ULN2004 chip would require recoding. Would the replacement of the 74LS require the coding for the PIC to be different? Should I use an inverter, and if so, can you recommend one? I have been working on this for so long I am losing my mind haha. Here is the sample code I am using

#include <pic.h>


__CONFIG(INTIO & WDTDIS & PWRTEN & MCLRDIS &
UNPROTECT \
	& UNPROTECT & BORDIS & IESODIS & FCMDIS);

int i, j, k, n, Dlay, CurLetter;

const char Letters[] = {
	
	0b0000001, // A
	0b0000001,
	0b0000001,
	0b0000001,
	0b0000001,
	
	0b0000010,
	0b0000010, // B
	0b0000010,
	0b0000010,
	0b0000010};

main()
{
	PORTA = 0;			// All Bits are Low
	PORTC = 0b000001;	// Start With Top Left
	CMCON0 = 7;			// Turn Off Comparitors
	ANSEL = 0;			// Turn Off ADC
	TRISA = 0b101000;	// RA5/RA3 Inputs
	TRISC = 0;
	
	CurLetter = 0;		// Start With "A"
	
	while (1 == 1)		// Loop Forever
	{
		for (Dlay = 0; Dlay < 25; Dlay++)
		 for (i = 0; i < 5; i++)
		 {
			 j = Letters[(CurLetter * 5) + i];
			 k = (j >> 2) & 0b010000;
			 PORTC = j & 0b111111;
			 PORTA = k + i;
			 for  (n = 0; n < 259; n++);	// 4ms Delay
		}

	CurLetter = (CurLetter +1) % 2; //Increment Letter
	}
}

If you have the time, a quick schem would be great. I am new to all of this, this is my first project. thanks!