That is poser content that new members get for free. It is usable in bryce via Daz Studio. Download them, cause they will not be in your account history! You also get a coupon for 15 items from the PC Bonus section, which can only be used once, and you must have only those bonus items in your cart, or the coupon won't work. The bonus coupon is good until 30 Nov 2006.

Oh, the 2 letters before the number denote the Type of item, where ac is accessory, pe is people, tx is texture, ds is daz studio, br is bryce, etc.

I bet that the content in your downloads, includes michael 2 and victoria 2.