Cannot accesss survillence camera remotely via web

> We have a survillence camera installed at our store. I want to access that
> camera remotely so that when i am not able to go on store still i can do
> monitor the store.
>
> I have one laptop and one desktop at home. (it is having wireless
> connection) The laptop is running windows XP. IF i put windows firewall off i
> can access my camera via browser as http://172.147.24.0/
>
> My desktop is running windows Vista (it is having broadband internet
> connection). When i try to access camera via browser the screen opens but it
> is blank and also IE hangs (I kept windows Firewall off while accessing it).
> Can anyone help
>
> Regard
> Madhvi