oki maybe i wasn't as helpful as i thought.
IDA is a 'Windows or Linux hosted multi-processor disassembler and debugger'. Take a look
here. It's helpful since it supports XBE files. Using an xbox 'FLIRT' file (its on the web somewhere) it will display most of the xapi functions.
A search for 280 will turn up nothing in a normal hex editor simple reason is that from a debuger to a hex editor the value is reversed. So 280 is 80 20 in hex. If you just want to change the backbuffer size try searching in a hex editor for somthing similar to 66 C7 46 04
80 02 66 C7 46 06
E0 01 since 280h is nearly always followed by 1E0h in the XBE (note: the hex not in bold will not be the same in other XBE files).
In IDA select 'IDA View-A' search (, 280h)

QUOTE
Raydn, would you also please convert 500h, 1E0h, and 2D0h to hex?
sorry, must have misread that
500h = 00 05
1E0h = E0 01
2D0h = D0 02
280h = 80 02
This post has been edited by raydn: Apr 16 2005, 12:59 PM