Temporary files directory

[daniele pendenza <danielependenza@yahoo.fr>]

Hi all,

currently I have a system-wide tmp directory, that has its own partition 
- let's name it K - on the disk.
The K size is 1.5 GB. Unfortunately I found that it is too small for my 
purposes because it  is used as a working directory of many programs 
-including the file roller.
- What size do you recommend for a desktop system ?
- Is it possible to redirect the actual temporary directory to another 
directory ? I mean tell the system to use another temporary directory - 
not the /tmp ?

cheers,

daniele