Added more memory. Not useable???

[mark@neidorff.com]

Hi all,

My machine has been mostly updated to lenny from etch.  When etch was
installed, I had 2 Gig of ram.

I use virtualbox to run a guest OS.  I felt that the memory that I could
allocate to the guest was insufficient (too much swapping) so I added 2
Gig more of ram (same brand and model of ram as the original).  The memory
is recognized at boot just fine.

This is the contents of /proc/meminfo
MemTotal:       906792 kB
MemFree:        349352 kB
Buffers:        101224 kB
Cached:         203496 kB
SwapCached:          0 kB
Active:         203744 kB
Inactive:       185136 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:       906792 kB
LowFree:        349352 kB
SwapTotal:     2931820 kB
SwapFree:      2931820 kB
Dirty:             404 kB
Writeback:           0 kB
AnonPages:       84180 kB
Mapped:          50976 kB
Slab:           151092 kB
PageTables:       1716 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:   3385216 kB
Committed_AS:   218696 kB
VmallocTotal:   122576 kB
VmallocUsed:     47516 kB
VmallocChunk:    70344 kB

As I understand what I am reading, I have (about) 1 Gig allocated as
system memory and (about) 3 Gig allocated as swap.  How do I change this
so that I can increase the amount of ram allocated to the virtual machine?
 I tried just increasing the allocation in the configuration of the
virtual machine, but the virtual machine just hung.

Thanks,

Mark