[irrtoolset]Problems with prtraceroute and prpath

Hi, I have some problems in compiling these two utilities. I've succesfully
downloaded  the irrtoolset-20040308-1.patch (thank you glen!) and I've applied
it so that I can compile with gcc3.3.1. But I can't compile, with the  general
Makefile, prpath and prtraceroute, so I used theirs Makefile but I get some
errors. They are type-conversion errors, and so I can't resolve them without
great truble by understanding the entire code...
For example, in compiling prtraceroute I get
"cannot convert `const MPPrefixRanges*' to `const PrefixRanges*' in assignment"
in bgproute.cc line 1086, and of course compiler is right! Someone changed
return type of the method "expandRSSet" in irr.hh... and so on...
I tried to solve this and the other following 3 or 4 errors by casting (they
aren't  much more), but while it compiles correctly, it does not run correctly:
I launched prtraceroute www.google.it and I got  1 *  2 * 3 * .... etc.
etc. If I use the simpler traceroute I got the right gateways and the right
route, so I think that it's a buggy program or, probably, I cant' cast everything
I want...
I hope someone could help me, 'cause I desperatly need a program with the
characteristics of prtraceroute and prpath for a project for a school course.

Thank you for the attention and sorry for my english, I'm italian.
bye!

Emanuele