How can i connect my acer one laptop to my tv?

what kind of tv do you have? if u have a digital tv like lcd then check for a vga port. If there is one you can then use a vga cable like you would connector a desktop to a monitor. If you have a hidef graphics card then you may have dvi or hdmo port. If so then you can use that to connect to the hdmi on your tv (if u have one).
Thats the graphics sorted.

For the audio, you can either listen to the laptop or try using rgb cables if you have the card on your laptop.

what model laptop do you have?

just to reiterate on the audio, by rgb I meant the rca red, white and yellow and not colour scheme red green blue (doh!).

There are wireless solutions also. I have not tried this yet but those streaming boxes allow you to do that.

some wireless solutions I have heard of are slingbox and wdtv (which incidentally I was looking into).
found another one which I have not heard of before called displayshare.

I have not tried any wireless solutions so you might want to do a bit of research to see if it appeals to you.

try 1024x 762 on your HDTV with a VGA cable.