I've been trying to set up my scanner, which is a Trust combi and uses scsi over parallel interface. It doesn't have a proper sane backend but I've read that the hp ppscsi works.

Following the instructions here: http://www.linuxquestions.org/questi...d.php?t=416704

I get as far as patching and compiling the kernel (2.6.15), where the new scsi drivers show and I can select as modules etc. but I cant insmod any of the modules - I just get 'not found' error. I also tried modprobing them with same results. Also I have no /dev/sg0 which I think is probably because the mods arent loaded. Making them built-in doesn't seem to help either.

Anyone know why insmod doesn't work (even on an unpatched kernel I can't insmod parport)?

Just checking, but, are you actually using the newly compiled kernel? Have you rebooted before trying the insmod or modprobe?
Good luck.

Yep rebooted

Let's have a look at lsmod to see what's loaded?
Good luck.