How would I do this. Via a file explorer?

Basically I have just set up Sky By Mobile (www.skybymobile.com) and
the application downloads fine to my 6230i via WAP. However, I have
just purchased a Nokia 6233 and the service message will not let me
download the application to this phone from their wap site, saying
'device does not support this application' - although I'm sure it
will. It is just detecting the fact that I am on my 6233 and won't let
me do it.

So - I'd like to extract the application that has downloaded correctly
onto my 6230i and put it on my pc, so I can install it on my 6233
(using my infra red and Nokia PC suite).

I am afraid the 6233 is not yet compatable, and they run completly
different browsers, it should just be a matter of time untill sky get
up to speed
Old 6230i
Integrated XHTML browser connects over TCP/IP stack

New 6233
WAP 2.0, XHTML browser over HTTP/TCP/IP stack HSCSD

Compatible handsets
Check below to see if your phone is compatible with Sky by mobile. If
you don't have the right phone, visit this page regularly to check for
new availability. If you are a Vodafone 3G customer with a handset
marked with an *, you will also be able to watch Sky Mobile TV.

Nokia:
6600
6630*
6680*
7610
N70*
3230
6260
6620
6670
6681*
6020
6170
6230
6280
6021
5140i
6230i
6030
6060
6101
6111
7270
7360
7370
8800

http://www.sky.com/skybymobile/requirements