What options of linux do i have for a eMac?

System specs:
1.25GHz G4 PPC
1GB DDR ram
ATI Radeon 9200 32MB AGP
combo drive
40GB PATA HDD (2 partitions 1:Mac OS X Tiger 2:Linux)

i want to know what would be the best and easest to install for my system.
and do i have to set the second partition to unix file system or leave it as default?

Pretty-much any distro with a PPC version will run easily on those specs. Here's the link to the page from which you can download the ISO disk image for the PPC version of Ubuntu, the most popular Linux distro at the moment & third most popular desktop OS after Windows & OS X:

Installation/MinimalCD - Community Ubuntu Documentation

As regards formatting the partition, the installer will format it to ext3 or ext4 itself (not supported by Disk Utility); so you can just create an area of free space (or format it to "MS-DOS (FAT)" & give it a name if you want to make sure that you can identify the free partition in the Linux installer).

Good luck

cool thanks

does it matter what version & if its 32bit/64bitor do i get the highest i can?

you need the 32 bit version, the G4 is not a 64bit chip, but you wouldn't need a 64 but version anyway with less than 4 gig ram

ok thanks