Double trouble: jojo and C.C. Sakura

[Pioshin]

Hi guys, i'm italian and ive got an european (psl)dreamcast
i want to play whith jojo's bizzare adventure and card captor sakura. When i check the VMU i see correctly the logo of the games but in my tv i dont see anithing except the SEGA DREAMCAST logo!
How can i solve my problem?
PS: I play whith a RGB cave for NTSC games

Is it a capcom block for european consoles?

Please help
Massimo