It's the offset from the beginning of the file in pretty much any hex editor. I'm rather new to all this so excuse me if I wrote that wrong.
After locating this in IDA, I found the offset that could be used in a hex editor (I used Bless' go to offset function) as it seems IDA's and Bless' locations were not matching.
I opened Tribes2.exe in HIEW and did a Goto A9DD8 and it took me to
.text:004AA9D8 call PlatformAssert__processAssert
So I'm wondering (without testing) if changing the JGE @ 0x4AA9C8 to a JMP wouldn't accomplish the same thing.
I don't use hex editors much. I've pretty much fleshed out an IDA database with comments and labels gleamed from comparing it to really old Torque source code, and when I want to patch something I do it in memory after using the Assemble function of OllyDbg to see what bytes I need to change.