Slackware :: Install Slack 13 64bit (GPT And Fdisk) / Command To Use With Parted To Mark The Partition As 82?

After trying without success change from windows to ubuntu (dual-boot unsolved problems), I decided to try slack as I have seen that user to user support for slack is usually best oriented and faster.But I am having some problems in order to install slack because of GPT support. As I know its a bad idea to start to asking for help without speak what I have tried, lets to this first:

At first I tried just to boot from DVD and went through the install using the help inside the disk. It doesn't work because either fdisk and cfdisk that are suggested in help doesn't offer support to GPT.

After that first try i looked to:url

But also it suggest the use of fdisk. However, it suggested too that I could use another partition application and since I have the live cd for ubuntu, I tried to partition from there and use those partitions for installation.

At first I tried to format as ext4, but i discovered that slack still dont offer support to this format (at least the version that I downloaded).So I tried again but this time using ext3 as format to my / and /home and use the swap offered in the application for use as swap (duh!)But every time I try to install using the dvd it doesnt find my partitions with fdisk, only with the parted command I can see my partition table displayed correctly.However, every time I try to run setup it say that it didnt found and linux partition (swap also when i try to target).So this is my dilemma, I cant use fdisk, in the parted manual (url) it only says that it supports ext2 (not mention ext3) and also i dont find any command to use with parted to mark the partition as 82.I ran through this 2 other posts (url), but as I am still waiting for some update there I decided to ask it here hoping to discover that this is an easy problem.