The standard DSL Linux uses an old kernel version for space requirements (dsl is only 50 mb). DSL-N however, (DSL NOT) made by the same people, is DSL Linux without the 50 mb space limit and uses the newer 2.6 kernel. I tried to get DSL linux to boot on my computer that uses SATA once and it wouldn't boot because of the old kernel. So I would use DSL-N Linux, its pretty much the same. This FAQ
is helpful. Or, if you feel like it you could do a gentoo install.