You mean Star Wars Rogue Squadron?
Use the method I mentioned in the following thread:
http://www.widescreengamingforum.com/node/8483
I've checked changing the resolution using the following file:
Rogue Squadron v1.2 [US] No-CD/Fixed EXE/WinXP Fixed
And it works great. To download the file check:
http://m0006.gamecopyworld.com/games/pc_sw_rogue_squadron.shtml
Here's the offsets to set the resolution using the file metioned above:
Remember to install the patch you need or get the v1.0 file. Use the tutorial I made using XVI32. Looks hard, but it's so simple. Let me know if you need any help.