Added 20 sets to [DGC] Collection

Previews & DDL:

	[DGC] 2005.09 No.161 Mai Harada 原田麻衣
	[DGC] 2005.09 No.162 Yua Aida あいだゆあ
	[DGC] 2005.09 No.163 Kaho Kasumi かすみ果穂
	[DGC] 2005.09 No.164 Ichika Komatsu 小松いちか
	[DGC] 2005.09 No.165 Yuna Suzuki 鈴木優奈
	[DGC] 2005.09 No.166 Yukina Sanada 真田幸奈
	[DGC] 2005.09 No.167 Himeko Sakuragawa 桜川ひめこ
	[DGC] 2005.10 No.168 Yoko Kumada 熊田曜子
	[DGC] 2005.10 No.169 Kasumi Nakamura 仲村かすみ
	[DGC] 2005.10 No.170 Megumi Kagurazaka 神樂坂惠 & Arisa Oda 小田有紗
	[DGC] 2005.10 No.171 Ayumi あゆみ
	[DGC] 2005.10 No.172 Aya Kanai 金井アヤ
	[DGC] 2005.10 No.173 Hitomi Ito 伊藤瞳
	[DGC] 2005.10 No.174 Mihiro みひろ
	[DGC] 2005.10 No.175 Rei Amami 天海麗
	[DGC] 2005.10 No.176 Rio Yamada 山田梨央
	[DGC] 2005.10 No.177 Ayaka Takemoto 竹本彩華
	[DGC] 2005.10 No.178 Momoka Sakurai 桜井桃花
	[DGC] 2005.10 No.179 Shizuka Takeda 武田しづか
	[DGC] 2005.10 No.180 Yuino Saito 斉藤友以乃