An ISA Mod is as safe as it gets. I have modified about 120 EVGA Bios's and haven't had any reports of one getting Bricked. Just make sure you have a recovery disk/USB drive ready, BEFORE you flash this. Also, Flash From DOS (NOT a DOS Box in Windows) with AWDFlash. PS If you're not comfortable Flashing a BIOS, then just use the Windows 7 Loader by Daz.
Ok thanks, i know the other EVGA X58 mobo's also dont have removable bios chips, there just wasn't a mod for this one and its been a while since i did any of that kind of stuff. and i know perfectly well about Daz's 7 loader i was gonna use it to activate windows with the bios mod anyways. it be easier that way XD