MT 4 Mobile Issue! Please help!

 
Hello!
I just recieved a new PDA for xmas - HP IPAQ RX1950 with Win Mobile 5 - I tried to install MT 4 mobile using both the PDA installer and the PC installer however once it is installed and i click on "try it" the application just closes and does not stay resident! I was wondering if anyone else has had this problem? A little help?!

Thanks much!
 
In addition, when i click on enter registration code the pda is freezing :O