When you convert or move  a machine to Vmware virtual machine  sometimes the hard drive is locked into the IDE adapter see the image below:

I have been Googling around and found this workaround:
1.   Add another hard drive
2.   Use a ghost utility to copy the existing content to the new hard drive
3.   And then expand the hard drive.

while these steps hightlighted above solve the problem but it is too time consuming.

Here is a different approach:

1. Change the IDE controller to SCSI Controller.
This tutorial below is all you need:
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1016192
2. Increase the Drive Size using the vsphere UI.
3. Use windows and your partition tool to resize the partition.

In the old days, you could not just start installing stuffs on a running server through terminal server. You were often prompted with this error message:

start
cmd
change user /install

to go back

start
cmd
change user /execute

When that happens , you need to switch the server to install mode. Make sure that your users are off the server.
Switch to Install Mode in Windows 2000
http://support.microsoft.com/kb/320185

If you are running an old Ubuntu server and you don’t feel like updating the entire server just because your want to install php5-gd please following the directions below:

Command :

sudo apt-get install php5-gd 

Error:

Reading state information... Done
Reading extended state information
Initializing package states... Done
The following packages are BROKEN:
  php5-gd
0 packages upgraded, 1 newly installed, 0 to remove and 4 not upgraded.
Need to get 0B/37.2kB of archives. After unpacking 193kB will be used.
The following packages have unmet dependencies:
  php5-gd: Depends: libt1-5 (>= 5.1.0) which is a virtual package.
Unable to resolve dependencies!  Giving up...
The following packages are BROKEN:
  php5-gd
0 packages upgraded, 1 newly installed, 0 to remove and 4 not upgraded.

FIX

Add this to your /etc/apt/sources.list:
deb http://ubuntu.mirror.cambrium.nl/ubuntu/ hardy main 

sudo apt-get update

sudo apt-get install php5-gd 

php -m (to verify that php5-gd i installed)

service apache2 restart

Reference:
http://packages.ubuntu.com/hardy/amd64/libt1-5/download