You need to download the 2.6 patch from
http://ftp.cvut.cz/vmware/
IIRC unpack it and run runme.pl instead of the vmware-install script, then vmware-config.pl and you should be good to go. More info at
http://kerneltrap.org/node/view/1804
For some reason I could never get the cdrom to read cds under XPPro with VMWare and 2.6, although it worked fine with 2.4 (but I never really tried very hard).