can we use two different forums on the same server
 

i have two forums which are hosted on different servers but now i want host both of them on only one server that is one hosting account is that possible and can some one tell me the settings to be done for that

yes but u will have to put one if a folder

so it be like
www.yoursite.co.uk
and
www.yoursite.co.uk/forum

i have seprate domains for both

you should look into getting yourself a VPS

I run 2 forums on one server this way..

You can run as many boards as the server can handle on a single server.

How can you adivse a VPS if you don't have any information about the number of concurrent users etc.?

PS Hosting advice is done on vB.com.

Lease a server, create an account and assign it a domain name for each forum.

I run 3 vbulletin forums on a dedicated server. Each site has its own domain name, and account on the server.

i made an assumption based on the original post.
and of course there is no way of telling without full information.

i cannot afford much money so i am thinking of transfering

This can be done yes, if you have root access you can sort this out, assuming you've set up your /home/user/www or /var/www/ folder you can create 2 different folders for each domain under the specified folder (We will use /var/www for example) so /var/www/domain1 and /var/www/domain2. Under your Apache configuration (if you use Apache) add a vhost (Google "setting up an apache vhost" this will get this done for you easily). Set them up for /var/www/domain1 to link to www.domain1.com and the same for the other if you get the drift.

If your server is capable to run both forums then yes, lease the other and save some money doing this. Good luck ;)