can not launch xfree86 on debian linux on ibook G3

Hi..   I just got the new ibook G3 which has the ATI Radeon7500 32MB card (12.1" screen). I am trying install debian linux on it.But I got the problem whem I try to make xfree86 work.The saw the same problem on the mail list but I didn’t find the solution  this is the error that I get when I

RE: can not launch xfree86 on debian linux on ibook G3

HI, Thank you, I followed the procedure of installation of Xfree86 4.2 step by step , but unformtunitly, The last step, install the driver, with dpkg -I *deb it failed and got following error massage: Unpacking replacement drm-trunk-module-2.4.20-ben10 ... Depmod: *** Unresolved symbols in /lib/mo