webserver setup but cant log into pages from any other comp

[nook6]

Hi
Before I start I would like to say I am a newbie to linux and I installed linux mint for the first time yesterday.
I would also like to say hello to everyone.
Ok here we go with my problem (I am very sorry if this is the wrong forum to post this in)

I have installed linux mint 13 mate. also I have installed LAMP all is working fine so I think installation is all good.

I then installed zencart on the web server got that up and running except when I went to login to the admin section on a different computer I couldn't. I can login to admin section on linux box but not on any other computer (I can get the web page and everything just cant login).

Hi thanks for looking i have give in on zen cart so no need to reply to this.