Well - I saw the picture, and there's a few things you can do. The easiest being to convert your Windows 2000 drive to NTFS. You wont be able to see it from Win98. I don't know what's on your E & F logical drives..but if it's just data - Based on your setup, this is what I would do:
Boot into Win98, and copy everything on your E & F drives to the "H" drive (Win2K).
Delete the logical partitions (E & F).
- that will leave you with just Drive C:, and a ton of unallocated free space on your first drive.
Go back in Win 98, and do a "Create new partition"..basically install Win2K on your first drice along with Win98 so you end up with C: (Win98), and D: (Win2K) on your first hard drive.
Then, I'd keep your 2nd hard drive just for data, merge the partitions, and assign it a single drive letter. You'll end up with
{DISK1 - C

Win98), D

Win2K)}
{DISK2 - E

Data)}
With this setup, it will allow you to make any adjustments necessary in the future to make more space for whatever your needs may be.
Note: Some of these operations might take quite a while to convert, and i'd recommend installing the Boot Admin tool that comes with Partition Magic, and let it take care of all the O/S boot-up assignments.
Also - CREATE RESCUE DISKS!!!! I cannot stress that enough..you can use them on ANY pc you have problems with from there on. Those disks are life-savers when partition trouble comes into play.
Good luck.
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Pbxman
Systems Administrator