Hello. To get date and version:
The only BIOS upgrade I find listed for that model (T160 Aspire) on Acer Website for the Aspire T160 Desktop is:
Acer BIOS R02-B1 868.5 KB 2008/12/09.
If you received your computer before that date and you have not added a new BIOS flash to your PC since that time, you can be sure you do not have it. http://gd.panam.acer.com/home/
Search their site by your full Serial Number if possible, and then model number to be most certain.
When first turning computer on, at first signs of any text on your screen before
it actually boots up you may hit the "Pause - Break" button on the keyboard and try to get the on-screen messages to stop so you can read it and write it down.
This text on the screen should include/tell you what date and version your motherboard BIOS/Firmware model is. You can usually pause that with a few tries, and/or just hit CTRL+ALT+DEL right then (after pause and before Windows or Unix starts) to try again.
If that does not work hit the correct key to enter BIOS Setup (access long before Windows boots) and read all information about your system there in the BIOS screens (usually always has BIOS version date listed in there).
NOTE: Adding a new BIOS flash always calls for caution as if it fails or goes wrong for any reason mid-install you may not get the computer to work again.