getting citrix to work with linksys router

[watts3000]

I'm testing citrix behind a linksys befsr41 version 2. I know that in order for nfuse to work correctly I must run ALTADDT /SET to a external ip. Well what if one has a broadband router where your ip changes is there a way to configure citrix to resolve to a registered dns name? I run dynamic dns through zoneedit.com and thats how I run my exchange 2003 server and iis 6.0 web server and they work without a hitch. Theres got to be a way to get this to work with citrix. I'm using metaframe xp feature release 3.