Yes, you can install Solaris 8 Intel, W2000 and Linux on the same Intel box, however from my experience to avoid problems its better to install Solaris 8 first and on "primary partition" where is my example:
1- Install Solaris 8 in "primary partition"
2- Install W2000 on extend partition (dont worry if Solaris became unavailable).
3- Install "Boot Magic" in W2000 (of course you cold use another boot manager, in my case I like Boot Magic.
4- Configure boot magic to W2000 and Solaris (notice that Solaris will have 2 partitions (one is the boot partition, you should configure to boot from boot partition, as you problaby know is the small one about 10mb)
5- Install Linux and configure boot magic to boot from filesystem containt the Linux kernel.
Hope this helps.
Regards,
Carlos Almeida,