Default Error: set start of RAM


I spend the whole day trying to run Android on my XDA Guide (Touch Cruise)(Haret on SDcard)
There were several tutorials and files I used but nothing worked out...

The mainproblem (I guess) is somehow the default.txt.
There is an Hared-Error saying "set start of RAM". If I'm changing the default.txt and add "set RAMADDR 0x100000" (thats what I found via Google), Hared is crashing the next time I'm trying.

I guess those "0x100000whatever" where meant for some other phone, not for Polaris/Touch Cruise.

Does anyone know what to fill in to set the RAM correctly?
Or can anyone tell me right from the beginning how to install Android on this system?

The latest version I used was:

Thanks a lot!