Ok, my question. how do you create something alike LTSP but workable over the internet? Or does that work as it is? And i'm looking for something that's open source and free. I've checked out PXES but that's no free source as far as i can see. So is there anything out there that you can use/combine for getting a windows application to work out of a linuxserver towards a client over the internet. All ideas appreciated

I don't quite understand what you're hoping to acheive. Any sort of remote operation over the internet is going to be slow. But what exactly are you hoping to acheive, from a user's perspective?

It sounds like the user is supposed to be remotely operate a Windows application...running on a Linux computer? With WINE, perhaps?

What's not clear is what you're expecting of the client computer. Is this client computer a diskless workstation booting off of the server--like LTSP? If so, then your options are going to be severely limited and performance will be utterly pathetic. TFTP is completely insecure outside a LAN, and won't be able to deal with the unreliability and lagginess of the internet.

The client computer should boot locally, NOT like LTSP. You can perhaps use a liveCD or even a floppy disc.

How many users? If it's only one or a small handful, then vnc may be what you're looking for.