did you followed steps in 1st page ?
1) Do the downloads like the OP says
2) Extract cw150_b1138.exe to whatever folder you like.
3) Extract 蟲の姦獄0.68..cab into the scenario folder inside of the CardWirth folder.
4) Open cardWirth.exe, click anywhere, then click Adventurer's Inn icon. Then click anywhere on the paper.
5) Click the first button on the left with 宿帳 on it. Click the button 自動. Click 閉じる, then click anywhere on the paper with the image of the auto-generated char. Close that window by clicking 閉じる once again on the bottom right.
6) Now click on the upper most right button with 貼紙 on it, click the little green arrow to the bottom right until you see the one titled 蟲の姦獄. Click the paper, click OK when prompted, (just a warning telling you to activate the アニメーション無し option even if it's already activated it will say this), then, select the first option for most convenience デフォ子 (default child) unless you want to mess around with their hair, looks, whatever. That's the second option IIRC. Click OK once more.
7) Now you're back to the main screen, click on the blue helmet that reads 仲間, click the blue helmet that appears again, poof, the auto-gen char will vanish. This is good.
8) Click the first button on the left again that has 宿帳 on it. Click on the paper with the new character face, she should appear now in the bottom left behind the paper. Close that window now by clicking 閉じる.
9) Click the top right 貼紙 button once more, bottom right green arrow to 蟲の姦獄 and click it.
10) After launching the adventure, click the little gear in the bottom right for options. Slide the 2nd slider on the left all the way to the left. Then select the "アニメーション無し".