[iSevere]

This is what i use and it cant be the best way because i tested dark comet's screencapture and it uses way less memory .
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[HFDone]

the thread running just on part of the code and you dont dispose the image

[Ninja]

Like HFDone said you should dispose of the graphics and bitmap used. I tested it and for me it worked fine if put in a while loop. I used a using-statement, if you haven't used it before or don't know what it is I highly recommend you look it up.

[Dredd]

If you're planning on uploading these screenshots as some form of rudimentary screen sharing system you will want to look into image compression.

[gigajew]

Try something like this. Create an instance of the class while your application is alive, and make sure you dispose of it after. Subscribe to the OnScreenshotTaken event to get regular screenshots. I'm very rusty in Visual Basic .NET so there may be some mistakes.

[Ninja]

The problem is that OP wants to get his process lower than 17MB, but any program in .NET is out of the box 17MB. What OP wants has nothing to do with the actual remote desktop function.

[Ninja]

Infinite looping will of course drive memory usage up. You could suspend capturing while the system is idle and at an interval >300ms.

On top of that, consider capturing only the active window.