I am able to edit a file manually using a Hex Editor program but i would like to be able to do this programmatically in VB.

As an example, in the Hex Editor TEST.DAT looks like:

00000000: 0c 00 00 45 76 65 72 79 20 63 6c 6f 75 64 20 68
00000010: 61 73 20 61 20 73 69 6c 76 65 72 20 6c 69 6e 69
00000020: 6e 67 2e 20 20 20 20 20 20 20 20 20 20 20 e6 4b

and i want to change the values to the following:

00000000: 0c 00 00 41 6e 20 61 70 70 6c 65 20 61 20 64 61
00000010: 79 20 6b 65 65 70 73 20 74 68 65 20 64 6f 63 74
00000020: 6f 72 20 61 77 61 79 2e 20 20 20 20 20 20 e6 4b

Could someone help me or point me to a tutorial to do this.

Much appreciated.