Can I control my main PC using a 2nd and 3rd computer?

This is what I would like to do.

I have my main PC in my home office (MainPC).

I want to put 2 other computers in different rooms (PC2 & PC3).

Is it possible to go into another room, turn on PC2 (or PC3) and use it to control MainPC so I can trade or update my charts (on Main PC) using PC2 (or PC3)?

I have tried using TeamViewer but it's too slow and a touch cranky.

Is there any software out there that could do the above?

Thanks guys!

Remote desktop?

Start > run > type: mstsc

Make your mainPC as the sever.
Load all your platforn in there.
PC2 and PC3 as stations

vmbox

Would there be any 'lag' when typing or clicking?

I've tried using TeamViewer and the lag was a pain.

Thanks

Thank H

This is all new to me, do you know of any websites that could educate me more? Thanks