Wirelessly posted (BlackBerry8100/4.2.0 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/123)

Hi there. I apologise for being not very technically minded, but I am new to the world of blackberrys. I have just taken delivery of my blackberry pearl and although I have worked out how to change the ringtones, I cannot seem to find anywhere in the settings, how you change the alert tones for text and email messages. I have been into the actual files, but the only option it gives us to set them as the main ringtone. The alert tone which is pre loaded is very very quiet!

Can anyone tell me what I am doing wrong? It is probably something very simple!