Letter Agreement

Exhibit 99.4

Letter Agreement

March 31, 2007

Xxxx Xxxxxxxx
Chairman
NT Technologies, Inc.
0000 Xxxxxxx Xxxx.
Xxxxx 000
Xxxxxx, XX 00000

Dear Xx. Xxxxxxxx:

This letter will confirm the assumption by the undersigned of the following NT Technologies, Inc. debts listed on the audit for the period ending September 30, 2006:

Services by Xxxxxxx Xxxxx	$32,275
Services by W. Xxxxxx Xxxxxxx	32,275
Interest on notes converted to stock	4,200
Sears note	3,000
Interest on Sears note	2,080

We also assume any additional interest accrued on the notes that we converted into common stock prior to closing as well as any additional interest that may be accrued beyond the amounts listed above. Please advise if you need anything further.

Regards,

/s/ Xxxxxxx X. Xxxxx	/s/ W. Xxxxxx Xxxxxxx
Xxxxxxx X. Xxxxx	W. Xxxxxx Xxxxxxx