https://www.quicken.com/support/how-and-when-use-intermediate-version-convert-older-versions-quicken
describes the process of converting to a more current version. You'd need to use the special instructions of "Converting a data file from Quicken 98 - 2003."
The only "current version" of Quicken available to you is the subscription version, there's no "one time price" version available. If you're basically doing your accounting just fine with 2003 you might want to stick with that.
volvogirl said: I have a feeling that 2004 will only run a limited number of times. It's just to get you to 2013. 2013 is the full version.
Greg_the_Geek said: @Tom Young, I don't believe it's the same problem as pre-subscription Quicken since 2013 doesn't require a Quicken ID/password.
OldQUser said: When I installed 2013 on the secondary machine it wiped the 2003 install. I didn't see an option for it not to. Now I'm not sure I'll ever need 2003 again, but I'd rather not wipe it just yet. What does the installer look for? I noticed the Quicken directory on that machine now shows as 'empty. Can I just change the Directory name (Quicken_2003 for example) to fool it?