Agreement of Joint Filing

Exhibit 1

Agreement of Joint Filing

     Pursuant to 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, the undersigned persons hereby agree to file with the Securities and Exchange Commission the Statement on Schedule 13G/A (the “Statement”) to which this Agreement is attached as an exhibit, and agree that such Statement, as so filed, is filed on behalf of each of them.

     IN WITNESS WHEREOF, the undersigned have executed this Agreement.

Dated: February 8, 2008

	Camden Partners Limited Partnership By: Camden Partners Capital Management, LLC,            its general partner
	/s/ Xxxxxx X. Xxxxxx
	Name:	Xxxxxx X. Xxxxxx
	Title:	Member
	Camden Partners II Limited Partnership By: Camden Partners Capital Management, LLC,            its general partner
	/s/ Xxxxxx X. Xxxxxx
	Name:	Xxxxxx X. Xxxxxx
	Title:	Member
	Camden Partners Capital Management, LLC
	/s/ Xxxxxx X. Xxxxxx
	Name:	Xxxxxx X. Xxxxxx
	Title:	Member

Xxxxx X. Xxxxxxx
 

/s/ Xxxxxx X. Xxxxxx, Attorney-in-Fact  

Xxxxxxx X. Xxxxxxxx
 

/s/ Xxxxxx X. Xxxxxx, Attorney-in-Fact  

Xxxxxxx X. Berkeley
 

/s/ Xxxxxx X. Xxxxxx, Attorney-in-Fact  

Xxxxxx X. Xxxxxx
 

/s/ Xxxxxx X. Xxxxxx  

Xxxxx X. Xxx
 

/s/ Xxxxxx X. Xxxxxx, Attorney-in-Fact  

X. Xxxxxx Xxxxxx
 

/s/ Xxxxxx X. Xxxxxx, Attorney-in-Fact