Recently I had added a new Sub Pens mod to SH3, to work properly I had to add the following commands at the end of the bottom line in Win XP boot.ini file:
/3GB /USERVA=2990
Doing so with a patch to sh3.exe the mod works well,
BUT it causes problems with other games (stuttering) and my TV card just shows either a black screen or a still image of graphic blocks, to make sure I edited the file with and without the added commands 4 times, there is no doubt, without the text the TV card works fine!

Does anyone know what this command does and is there a possible fix to be able to use the mod without other programs suffering?