It's like any other install:
Disconnect all drives other than the SSD.
Disconnect all peripherals such as printers, USB drives, etc. Just leave monitor, keyboard, and mouse.
Connect the SSD.
Boot from the installation disc.
Follow the prompts.
You will end up with 2 partitions: a very small System Reserved and a large C covering the entire remainder of the drive.
After it completes, get an Internet connection going, install anti-virus, and update Windows.
Then reconnect any other drives you may have and your peripherals.
I'd also check a few things, like size of page file, amount of space devoted to System Restore, SSD alignment, and your defragmentation schedule. Look in Device Manager to see if there are any errors or missing drivers
Do you have an Ethernet driver
to be able to establish an Internet connection? It may be on a disc supplied by Toshiba. If not, go to Toshiba.com support page for your laptop and download it to a USB stick or CD or DVD before installing the SSD.