How to use second PC as extended monitor

I have 2 PC's (notebook). Both have Windows 7 32bit. They are cross connected with LAN cable.

How to use PC 2 as extended monitor of PC 1 ?

I want to achieve same effect as I would connect external LCD to PC 1.

MaxiVista requires LAN router/switcher, I only have cross LAN connection.

As you only have 2 PCs, and if your only limitation with MaxiVista is obtaining IP connectivity between the two PCs, you don't need a LAN router or a switch, but only a Ethernet cross-over cable between the PCs. (You can purchase one of these from your favorite computer retailer if you don't have one or don't want to make your own.)

Since you won't have a DHCP server, you will either need to manually assign IP addresses on each PC in the same subnet, or use the auto configuration addresses (will take a few minutes for the DHCP query attempts to timeout) - which will result in 169.254.*.* addresses on each.