I have loaded VL5.8 Standard Gold on a P200 machine with 128MB RAM and it worked fine. But with only 2.5GB of hard drive space you will have to exclude some of the packages. I suggest excluding browsers you don't need, maybe the Gimp, the kernel source, etc and it should then fit in 2.5GB of space. You only need 256MB of swap space with that amount of RAM.
If you really want an older version of VL get them here: http://vectorlinux.osuosl.org/
(that link by the way is on our webpage, under downloads).
This will probably get me banned.
Go dig in the dumpster behind COMP USA and see if you can upgrade. It is 2011+1/2