Samsung D900 & Free Games

Hello all.

I've recently treated myself to an early Christmas present of a D900 and overall have been quite happy with it. Although the more I use it, the more 'niggles' i find.

But one thing I still cant figure out is how to get some free games on the phone without using WAP (i'm on pay as you go and the charges are pretty steep - not to mention how irritating it is to do anything 'net' related on a mobile phone).

I've tried putting the two files in various folders on both phone and memory card but when selecting 'execute' i just get the error message of 'unsupported file format.
The files I'm trying are supposed to be for this model of phone so if it wasnt possible to install games in this manner, why would they exist?

Hopefully someone out there can shed some light on this.

Happy new year all!
Sam.