I need step by instruction to instal linux with vista

The "partition" for installing LinuX must not be "created". It must be "free disk space".
As rogervista said, boot with your Linux installation CD/DVD and find and delete the so called "L" partition, and then create in that free space the LinuX partitions

To solve this problem you have to make a partition form the outside of windows
---------------
1 - delete the partition you made in vista
---
2- download from the internet an Fdisk bootable floppy OR use Puppy linux live cd and run gpart from menu > setup > gpart
----
3- folloe the intructions on the fdisk program and then install linux
--------