Upgrade FreeBSD

[Paweł@rozanka.net]

Hey 
I have FreeBSD 4-9 RELEASE,and i wont upgrade it to
4.10 STABLE.I use for this operation CVSUP,and
when cvsup dawnload sources in /usr/src directory
,i write:
cd /usr/src
make buildworld
and system compiling the sources,while return my
error message.
With another time errors whas different,and I don know why.My compiuter is pentium 100 with 32 MB ram
Please Healp  MY ???