Setting partitions

[pau]

Hi everyone!

I have decided to install ubuntu on my laptop. Currently I have a
windows installation in a 60GB partition and I don't have any free
space. I installed Partition Magic but I keep getting an error every
time I launch the program. I'm not able to resize the partition in
order to create a new ext3 and swap partitions to install ubuntu.

I was wondering if there is any way to manage partitions from ubuntu's
installer. I tryed to install it and when it comes the moment to use
the partitions I try to resize it without succes. Is there a way to
create a partition without erasing my windows files on NTFS?

Thank you,

Pau