"Combine multiple computers," as in multibox on multiple PCs? If so, yes.

http://isboxer.com/index.php/guides/...iple-computers

[edit] But you will need to use Input Director or something like that to be able to use your mouse/keyboard in a "KVM" style (where you can mouseover to the other PC to control those individually. ISBoxer only does key/mouse broadcasting, not KVM functions.