Hi sm42,
Depends,
how do you connect to the net? modem/router(brand?)?
you will need a VPN client or work device to vpn with.
if you want to create a VPN between home---work you can always inciate the traffic from home and set to keep it up, this way you don't need a fix IP at home.
Hope it helps
Niltinho
BEng,CCNA,MCSA,CNA