Paper Mario (ow...)

I have a problem with Project 64, with Paper Mario.
When I enter that 'spinning-roof' house in city, the game goes all black. It keeps playing, but everything gets dark.
To 'counter' it, I put in the wireframe mode, so I can see something (it show something here and there...), and I manage to proceed in the game, but everything else keeps 'invisible' after I enter the house. ???
There are other problems with Paper Mario, but I still could play with them (like, everything keeps flashing in the city, and those 7 stars don't appear in the game [they appear in the intro tho...]

-=My system=-
Operating system: WinME
CPU: AMD Duron 750mhz (or its 850...dont remember)
Video Card: Sis 630/730 w/ 32M
RAM: 224M
DirectX 8.1
I was using the default plugins of PJ64 v1.5

missing something?
and I think i'll need to live with the 'yummy' flashing
here's a print screen of inside the house, with wireframed mode. its a bit 'ecchi' cause its jpg

Yay ^^

Me was way too lazy to search for other EMU and stuff. Then I began 'playing' with v1.5 config. I've found a 'Turn Advanced Settings Visible Here' button, then I went to:
Options > Config. Graphics Plugin...
Then:
Rom Settings. Then I changed
Direct3D Clear Mode to 'Only per Frame' instead of default.
And then the 'inside house' area was visible :colgate:
But it was after... 5-10 min. messing around with the config.