[Koha] converting alexandria data to koha

First of all, I would like to give a round of applause to the developers of koha. What a great help to the community! Currently, we are using Alexandria Library System and we are planning to shift to Koha but my problem is migrating Alexandria data to Koha. I found the instruction on the web http://wiki.koha.org/doku.php?id=cmsdconversion but unfortunately after several attempts I end up unsuccessful. Perhaps the problem is on my part because I'm a newbie in Perl programming but I'm trying to learn now as much as I could. My question is, has anyone ever successfully migrate Alexandria to Koha willing to share their experienced in detail? I'm sure lots of user will benefit from it like me. Thanks in advance!