whats your problem then, did you get out the wrond side of the bed
maybe give people time to read and reply to your post if they can help, or would you like a list of people saying sorry mate can't help !!
if the problems started since the alarm has been fitted then maybe thats the problem get the people who fitted the alarm to take it off and see if that sorts it
can you here the fuel pump when you switch the car on? have you cheeked the fuel pressure at the rail ?
have you cheeked the crank sensor is working? Or does the hole of the LOC have to come and hold your hand whilst you do it all