problem installing psShutXP screen

[htctouch559]

im having trouble installing the psSHUTXP screen i download the file and when i try to open it to install i get this message: There is no application associated with "psshut". run the application first, then open this file from within the application....what do i have to do?

[D/\SH]

all you do is download the file save to the main memory and than run it. real easy install. if your having problems try to uninstall than re-install really easy download and upload and that is all i can help you with since that is all there is. so if you dont get it just keep trying and all