EXHIBIT 1

William E. Brown CENT Purchases on 11/29/2007

TRADE DETAIL

	TOTALS	390,123	$	1,827,563.84
Price		Shares	Gross
$	4.32	600	$	2,592.00
$	4.33	200	$	865.00
$	4.33	3,300	$	14,289.00
$	4.34	100	$	433.50
$	4.34	4,200	$	18,228.00
$	4.35	3,800	$	16,530.00
$	4.36	300	$	1,306.50
$	4.36	1,200	$	5,232.00
$	4.37	1,800	$	7,866.00
$	4.38	1,600	$	7,008.00
$	4.39	1,200	$	5,268.00
$	4.40	200	$	880.00
$	4.41	200	$	882.00
$	4.43	900	$	3,987.00
$	4.45	210	$	934.50
$	4.46	2,300	$	10,258.00
$	4.47	800	$	3,576.00
$	4.48	1,900	$	8,512.00
$	4.49	5,200	$	23,348.00
$	4.50	55,930	$	251,685.00
$	4.51	3,800	$	17,138.00
$	4.52	100	$	452.00
$	4.53	200	$	906.00
$	4.54	3,126	$	14,192.04
$	4.55	3,075	$	13,991.25
$	4.56	7,751	$	35,344.56
$	4.57	12,900	$	58,953.00
$	4.58	2,200	$	10,076.00
$	4.59	4,600	$	21,114.00
$	4.60	21,600	$	99,360.00
$	4.62	149	$	688.38
$	4.63	3,905	$	18,080.15
$	4.64	4,900	$	22,736.00
$	4.65	10,827	$	50,345.55
$	4.66	10,449	$	48,692.34
$	4.67	7,978	$	37,257.26
$	4.68	5,143	$	24,069.24
$	4.69	7,395	$	34,682.55
$	4.70	35,096	$	164,951.20
$	4.71	2,300	$	10,833.00
$	4.72	7,500	$	35,400.00
$	4.73	500	$	2,365.00
$	4.74	11,337	$	53,737.38
$	4.75	15,405	$	73,173.75

Trade Totals

Average Price:	$	4.6848
Shares Bought		390,123

$	4.76	7,951	$	37,846.76
$	4.77	1,850	$	8,824.50
$	4.78	2,600	$	12,428.00
$	4.79	4,478	$	21,449.62
$	4.80	15,478	$	74,294.40
$	4.81	1,380	$	6,637.80
$	4.85	6,950	$	33,707.50
$	4.86	300	$	1,458.00
$	4.87	2,200	$	10,714.00
$	4.88	7,100	$	34,648.00
$	4.89	1,100	$	5,379.00
$	4.90	7,990	$	39,151.00
$	4.91	19,400	$	95,254.00
$	4.92	6,250	$	30,750.00
$	4.93	500	$	2,465.00
$	4.94	12,000	$	59,280.00
$	4.95	15,500	$	76,725.00
$	4.96	1,700	$	8,432.00
$	4.97	100	$	497.00
$	4.98	2,700	$	13,446.00
$	4.99	4,420	$	22,055.80

Sharon Brown CENT Purchases on 11/29/2007

TRADE DETAIL

	TOTALS	15,000	$	69,071.00
Price		Shares	Gross
$	4.51	2,000	$	9,020.00
$	4.52	200	$	904.00
$	4.53	800	$	3,624.00
$	4.55	300	$	1,365.00
$	4.56	900	$	4,104.00
$	4.58	300	$	1,374.00
$	4.59	1,100	$	5,049.00
$	4.60	1,400	$	6,440.00
$	4.61	300	$	1,383.00
$	4.62	1,700	$	7,854.00
$	4.64	2,300	$	10,672.00
$	4.65	1,100	$	5,115.00
$	4.66	100	$	466.00
$	4.67	1,000	$	4,670.00
$	4.68	1,400	$	6,552.00
$	4.79	100	$	479.00

Trade Totals

Average Price:	$	4.60473
Shares Bought		69,071

William E. Brown CENT Purchases on 11/30/2007

TRADE DETAIL

	TOTALS	420,450	$	2,176,582.56
Price		Shares	Gross
$	4.99	1,200	$	5,988.00
$	5.00	8,500	$	42,500.00
$	5.01	200	$	1,002.00
$	5.02	2,200	$	11,044.00
$	5.03	4,000	$	20,120.00
$	5.04	5,333	$	26,878.32
$	5.05	14,900	$	75,245.00
$	5.06	12,200	$	61,732.00
$	5.07	14,110	$	71,537.70
$	5.08	15,226	$	77,348.08
$	5.09	19,213	$	97,794.17
$	5.10	45,169	$	230,361.90
$	5.11	6,700	$	34,237.00
$	5.12	6,111	$	31,288.32
$	5.13	6,200	$	31,806.00
$	5.14	3,200	$	16,448.00
$	5.15	7,128	$	36,709.20
$	5.16	7,000	$	36,120.00
$	5.17	7,200	$	37,224.00
$	5.18	5,589	$	28,951.02
$	5.19	21,800	$	113,142.00
$	5.20	8,400	$	43,680.00
$	5.21	8,534	$	44,462.14
$	5.22	33,533	$	175,042.26
$	5.23	8,700	$	45,501.00
$	5.24	10,189	$	53,390.36
$	5.25	37,100	$	194,775.00
$	5.26	52,650	$	276,939.00
$	5.27	7,176	$	37,817.52
$	5.28	4,082	$	21,552.96
$	5.29	9,806	$	51,873.74
$	5.30	6,900	$	36,570.00
$	5.31	2,200	$	11,682.00
$	5.32	15,200	$	80,864.00
$	5.34	2,801	$	14,957.34

Trade Totals

Average Price:	$	5.1768
Shares Bought		420,450

William E. Brown CENT Purchases on 12/3/2007

TRADE DETAIL

	TOTALS	189,427	$	1,037,927.36
Price		Shares	Gross
$	5.22	500	$	2,610.00
$	5.23	1,400	$	7,322.00
$	5.24	500	$	2,620.00
$	5.25	1,800	$	9,450.00
$	5.26	2,100	$	11,046.00
$	5.27	600	$	3,162.00
$	5.28	1,000	$	5,280.00
$	5.29	700	$	3,703.00
$	5.30	2,335	$	12,375.50
$	5.31	2,965	$	15,744.15
$	5.32	1,500	$	7,980.00
$	5.33	1,100	$	5,863.00
$	5.34	7,400	$	39,516.00
$	5.35	2,900	$	15,515.00
$	5.36	1,600	$	8,576.00
$	5.37	1,400	$	7,518.00
$	5.38	1,300	$	6,994.00
$	5.39	900	$	4,851.00
$	5.40	2,000	$	10,800.00
$	5.41	6,500	$	35,165.00
$	5.42	6,300	$	34,146.00
$	5.43	4,800	$	26,064.00
$	5.44	5,700	$	31,008.00
$	5.45	6,400	$	34,880.00
$	5.46	4,500	$	24,570.00
$	5.47	15,631	$	85,501.57
$	5.48	3,900	$	21,372.00
$	5.49	8,300	$	45,567.00
$	5.50	22,718	$	124,949.00
$	5.51	12,500	$	68,875.00
$	5.52	5,962	$	32,910.24
$	5.53	2,487	$	13,753.11
$	5.56	1,902	$	10,575.12
$	5.57	5,000	$	27,850.00
$	5.58	1,700	$	9,486.00
$	5.59	7,800	$	43,602.00
$	5.60	23,027	$	128,951.20
$	5.61	10,300	$	57,783.00

Trade Totals

Average Price:	$	5.4793
Shares Bought		189,427