Ok new matters raised
My machine would be
833 P III, 256 SDRAM, 6,4GB HDD, 1MB/s link to the net - shared with other machines / services I got on it - search engine and some other thing-ies.
So - is my connection speed enough (for this sized forum

, or for how big)
And the security issue - what about that (I'm hit by this totaly blank.)
If I use phpBB forums - and that is the only thing on this machine, OS-Win2003,Apache 2,MySQL 4.0.18, PHP 4.3.4
NOTE - I remembered to ask, When the PHP 5 got out - its installer was not functioning well with mysql - I did entire setup to the manual, and my friend didn't use the installer and made it function (with the same parameters).
Does someone knows is the PHP 5 installer now functional on this problem???