Merging the main partition with free space: is this possible?

Hey all!
My hard drive currently contains two partitions: 200 GB for the Tiger and 30 GB of free space I left when I wasn't yet sure if I will not want to install Linux on it. Now I am sure I won't and I'd like to merge these 30 GB back onto the first partition. Is this possible?
$ diskutil resizeVolume disk0s2 limits
Shows 200 GB is max size for the first partition. Guess then that this won't work:
$ diskutil resizeVolume disk0s2 230G
Any suggestions would be very appreciated!
Artemiy.

Although there are utilities available to repartition a hard drive without erasing all data on the drive, I wouldn't trust them and since you need to create or update your backup beforehand anyway to be on the safe side, do so and then reformat the hard drive with the Tiger install package that shipped with your Mac to a single partition. This will erase the hard drive completely first and then re-install OS X and all included software along with any 3rd party software and then re-store your data from the backup.
Or with a backup utility that provides for it, create a bootable clone backup of your 200GB partition saved to an external drive. Reformat the hard drive and then restore everything completely from the bootable clone backup.
When reformatting, be sure to select HFS+ (or extended) with Journaling enabled.

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geez, I hate writing a question when I think I've already found the answer!!
But in this case, the answer's so baad, I thought I'd run it by you all before I hit "desperation" mode! Here goes...
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As I see it, a direct conflict to what Apple claims in Disk Utility's Help.
So, I'm about to pull out and upgrade my data recovery programs - - will just try and get the pix and tunes back, I guess.
But if anyone has any idea how I can "undo" what's been done, it sure would help!!
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