Mandriva 2008 on Lifebook C1410 (Drivers)

Hello,

I installed Mandriva 2008 on Fujitsu-Siemens lifebook C1410, but there are two minor problems I have noticed.
1. Laptop speakers don't work, however headphones and external speakers work fine.
2. Display isn't very sharp and when I try to play a movie I get an error that there is not enough memory, however, I have 1GB RAM 256MB of graphics memory. (I had this problem with Fedora Core 7 as well, on the same machine).

Thanks in advance for your help and suggestions.