I'm trying to put together a custom Slax boot CD (hopefully it will fit on a pocket CD-R), and I need to be able to delete and add files from an .iso file. Why? Because I can either waste tons of CD-Rs, go to the store and spend money on CD-RWs (bleh

) or I can boot the image with Bochs or VMware or something like that. (I'd prefer the third option

)
Is there any decent freeware ISO editor out there? All the ones I've found so far were 30 day shareware trial things.
Thanks!
(My next project after this is a heavily customized DSL pocket CD. I'm starting with Slax because of its wide driver support. For some reason the colors on my DeskPro experiment box look funky with DSL...)