Without ahci enabled in the bios, you will be running in IDE mode.
Your SSD should still run, but may not perform quite as well. Still much better than a hard drive.
A SSD looks exactly like any other sata hard drive. Windows detects that it is a SSD by it's speed only.
What OS are you trying to install? Your pc came with xp or vista, and the drivers may not have been included. Are you trying to recover using some lenovo recovery dvd?
If you are using a windows 7 dvd, I would expect no particular problem.
Doing a clean install, you will want to pick the option to initialize the ssd as a bootable drive.
I finally got it! I used the OCV tools to do a secure erase and update the firmware; I then reset the CMOS on my PC, and voila!...I was able to install Windows 7 with no problem onto the SSD. Didn't need to even access the BIOS.