Dex, thanks for the reply. I need to be able to physically plug in my laptop into the Dell computer so I can access the Solaris system without hauling around a portable monitor and keyboard. Any advice would be greatly appreciated.
If your Solaris is running X-Windows, you can install X-Windows server on your laptop and connect to Solaris.
Apart from Hyperterminial, another good option is PuTTY - it allows for serial, Telnet and SSH connection.