PXES configuration files and their prototypes

Hi list!

I've got some problems, and can't solve it with searching maillist and
forum. PXES is wonderful, it works completely, i just cant find a way
where i can customise it.
1. for example, i need custom if-up script. now i'm writing directives
to default.conf, it works but it's structurally incorrect ;). Where in
<pxesdir> i can found a proto for if-up, for example?
2. I think i dont quite understand pxesconfig process. imo it takes
kernel and modules from <pxesdir>/stock/arch/ARCH, takes distrib from
<pxesdir>/dist (<--1st question refernce here) and assembles into
*.initrd. Am i right?
3. i installed pxes from unofficial debs, link found on forum, v
1.0.6, pxesconfig the same.
<pxesdir> seem to be /usr/share/pxes
in my <pxesdir>/dist/etc some scripts look like they were taken from
my system, that also confused me a bit ;). So pxes when installing
gets somekind of filesystem skeleton from existing system?
4. I tried to make my custom kernel (2.4.31) using wiki, everything
went good, but i couldn't run pxesconfig with new kernel. Is there any
traps that not mentioned in wiki?
I just put this task away for a while, seems i got to compare notation
and filesystem structure with prebuilt ones, but if there's something
special, or you can point me to a good TFM, i'll be very grateful (or
graceful? for sure, not grapeful ;) not my native language, sorry ;)

Any replies will be highly appreciated. I think i missed some useful
links and therefore cant visualise the whole structure in my head ;)

regards,
if


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