Can't speak for KDE, but to repartition, you'll need a program like Partition Magic. That said, I prefer some of the clones under Linux, such as parted, gparted, or qtparted (the last two are frontends to parted). I've had too many issues with Partition magic fouling up partition tables created by other programs, such as Linux fdisk or sfdisk, or parted. Basically, if you start with PM, stay with PM, if you start with a different program, I'd stick with that. There are several live cds with parted/qtparted installed, in case you don't have linux installed

My procedure would be to do all this under linux, on a desktop, by doing the following.

1. mount the ext2 partition on the linux box

2. tar (using the p switch, to preserve permissions) the entire contents of the ext2 partition, to a file. Using tar will also keep any hidden files you have. This is our backup in case something goes wrong.

3. mount the fat partition, copy anything you wish off the fat partition to a folder on your hard drive. Also a backup in case something goes wrong.

4. unmount both the ext2 and the fat partitions, then resize the partitions using partition magic/qtparted, etc.

5. Assuming everything went well, just put the card back into the device.

Assuming that not everything above went well, just re-partition the card with the desired new sizes, untar (again using the p switch) the contents of the backup you created, and copy anything form the fat partition back to that partition.

(If you're daring, you could just stick the card in and re-size the partitions, but I've learned the hard way too many times....)