4 LCD montitors with two computers and one mouse. possible?

[Dr_Wonderful]

I have a total of 4 lcd monitors and I want to 16 table on them. Is it possible to connect two computers to 4 LCDs and use only 1 mouse and 1 keyboard? I would need to be able to log into my poker stars account and be able to play on any of the 4 monitors. I know some of this is possible and there is software but I have no idea which software would be most efficient or where to find it and how much it costs. I cannot buy a new computer or video card. Also I'm looking to purchase a 4 lcd stand but those are a bit expensive so if anyone knows of used/cheap ones let me know, this is one issue that I could pretty easily work around though. Thanks.