I do this all the time to access two Remote machines over the same
global Ip address

What I do is all in the router.

port 3389 fowards to computer 1 at port 3389
port 3388 fowards to computer 2 at port 3389

so when I want to connect to computer 1 I just just my home no-ip
address
and when I want to go to computer 2 I use my no-ip address and add
:3388

name.no-ip.org:3389 computer 1
name.no-ip.org:3388 computer 2

this saves me the trouble of reconfiguring the computers and simplifies
it all.

Its funny that all you people go through the hassle of VPN Dynamic DNS
and all that.

Just use No-ip like that one guy does and do it like that...

No-ip handles the dynamic ip address and the port fowards handles which
computer that you want to access to.