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Access violation in WinXP gamerserver app

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I am trying to play a networked game and I have found that when someone uses a simple telnet command and telnets to my server instead of using the game client, the game server crashes. I only have the bins for the exe and not the source code, so I am attempting to fix it with Ollydbg and HexWorkshop. I ran the program from within Ollydbg and then telnetted to it myself. It crashed and gave me "Access Violation when reading[A7738384] - use shift+F7 to pass exception to program". It highlighted the line 0047B20E . I copied and pasted here a sample of that area.
0047B1F8  |> 837D F4 00     /CMP DWORD PTR SS:[EBP-C],0
0047B1FC  |. 0F85 A1000000  |JNZ GServer.0047B2A3
0047B202  |. 8B55 FC        |MOV EDX,DWORD PTR SS:[EBP-4]
0047B205  |. 8B82 F0CC0E00  |MOV EAX,DWORD PTR DS:[EDX+ECCF0]
0047B20B  |. 8B4D FC        |MOV ECX,DWORD PTR SS :[EBP-4]
0047B20E  |. 83BC81 9CCC0E0>|CMP DWORD PTR DS :[ECX+EAX*4+ECC9C],0
0047B216  |. 74 1F          |JE SHORT GServer.0047B237
How do i find the exact value or instruction that is causing the crashing, by following this clue? Thanks.

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