Trouble accessing SVN on Ubuntu

Hi all,
I'm running SVN on Ubuntu 12.04, and I have to connect it to an online repository accessed by HTTPS. I can check out files from the repository just fine with the command:

svn checkout <https://pathToRepository>

But, I can't update the working copy properly after I make changes. I change a file in the working copy, and then try to update and get this:

svn up
At revision 3.

Revision 3 is the most current in the repository, but the update command doesn't seem to know that I changed any files.

I've been doing some Googling on this, and there seem to be 2 possible answers to this (or maybe 1, I'm not sure). It seems like you can either install a program called neon (or do I have to build it inside my existing svn executable?), or create your own web server. But, it also seems like you have to do both, based on some sources. I don't need to serve any repositories; all I need to do is access the online repository and update my working copy or commit to the online repository when necessary.

I'm very confused here -- would anyone be willing to give me a clear explanation of what I need to do? I'm sure if I get pointed in the right direction that I'll be able to handle it -- I just need that first push.

If anyone could clarify things for me, I'd really appreciate it.

Thanks,
Zel2008

Does "svn diff" show your differences? update is suposed o resync the local files to the server, like just before making a mod fter a lot of mucking around. It should erase your changes. Do not confuse it with checkin ci http://www.linuxfromscratch.org/blfs/edguide/chapter03.html\#ch03-update