Help needed with Toshiba Portge R100

Hello,
I have an old netbook from Toshiba, Portege R100 and have formatted the HDD. I now need to load an OS (Windows XP) which I am having difficulties with. R100 has no internal CD/DVD drives where in I can just change the boot settins in the BIOS and load the OS. I wouls appreciate any help as to if it is possible to us my home network and load the OS onto R100 or any other possible suggestions are most welcome.