I have read a million posts and I am still a bit confused. I have a 40 gb drive with ubuntu on it that has 19.3GB Free. I also have a 200GB drive with movies, music mostly, and some pictures, etc. I have 99GB free on that. However it is currently NTFS and I want to reformat it to Fat32. Is there a way to make a 99GB partition thats Fat32 and copy the files over and then make the rest of the disk fat32, and make it one big partition? If that makes since. I was gonna copy some files over to my other disk and burn some cds but I figured this may be a bit easier.

FAT32 isn't the most efficient filesystem - especially as it gets larger. You might be better with several partitions if you decide to go this way. I don't know of a way to "merge" 2 FAT partitions.
BTW Ubuntu will read the (current) NTFS data fine - just don't try and write to it.
Yet.

As to your question - yes, you can creatre large FAT32 partitions on Linux. Have a look at the manpage for mkdosfs.

Ok well I can just make it ext3 or whatever linux uses. Im just worried about loosing my files. I need to be able to write to it as this is where I save all files to that arnt OS related. Even if it stays 2 partitions in the end thats fine, I just want to beable to have the entire drive read/writable safely in linux.