No keyboard, mouse, or monitor

Windows XP is no longer supported by Microsoft. You have to install a newer version.

u need bigger ram

You will need to update the drivers on the computer for the docking station. It will be the windows seven drivers or lack of them that is causing a failure to remap the usb ports that the wireless dongle is plugged into.

re-install the drivers for your device.

Try reseating the video card in your new computer. Sounds like it may not be seating in the slot properly. Take it out and put it back in with the power off and then hook everything back up and then see if you get video,.

http://www.computerhope.com/beep.htm

here is Microsofts' page for driver downloads. http://www.microsoft.com/hardware/download/download.aspx?category=MK
put in your device model number , operating system, etc.
make sure you download it to your desktop so you can find it
run it to install and follow the prompts

check the jumper settting 

or maybe your connection went wrong somewhere 
just check them out

It has the latest mouse driver (logitech setpoint 4.0). Before installing Ubuntu the setup worked w/ SUSE/XP using GRUB dual boot. After installing Ubuntu XP does not see the usb mouse. Even Logitech setpoint does not have the mouse setup/configuration option. It appears that at boot it does not recognize the mouse or disables it. The BIOS has the usb keyboard and mouse enabled. Currently, I have two mices one for xp and either mouse will work under Ubuntu.

you need the drivers for the touchpad and keyboard, click on the drivers and utilities section, then allow active x when the pop up appears

http://support.acer-euro.com/drivers/notebook/ex_6600.html