Partition Magic for linux?

[Dotan Cohen]

I need to remove two vfat partitions and make one large ext3
partition. Is there a GUI program for linux that does this? If not,
would someone be willing to explain to me how it is done with the
command line tools? I have backed everything up and I know the device
names in /dev.

Thank you.

Dotan Cohen
http://technology-sleuth.com/question/how_much_memory_will_i_need_for_my_digital_camera.html