I didn't understand what you meant by "A Dell HP etc. will not offer this choice on booting to it which is why they can't be used."
An OEM CD...that is one that says Dell, HP, Toshiba, or whoever will not work for a Repair Install...A Microsoft Genuine XP CD is needed for this purpose...
The OEM CD's when you boot to them will NOT show a repair option...they will only wipe your hard drive of all data and restore a Ghost image to the machine to take it back to Day One status as if you just bought it...i can't explain this distinction any clearer....
As far as the boot .ini goes i don't know what you're asking...if it had been stated you had issues with the boot.ini then a repair install may not be neccessary as there are ways to repair the boot.ini from the RC.
Let us know where this goes from here...