How do you convert movies from a laptop/pc to a optoma pk301 pico projector?

SOURCE: projector can't connect to laptop

We just solved a similar issue. Most likely your PC or laptop is currently set to a display resolution that is too high for the projector or is one that it cannot handle. Try setting your computer display to 640 x 480 or 800 x 600 and see if you can get the projector to work. If it does, then you can figure out the maximum display resolution you can use. Also consult your projector documentation for supported resolution modes.

For the PICO in particular, it looks like those are in general for small mobile devices (320 x 240 or less displays), and the PK102 model has native VGA (640 x 480) support with extended support for 800 x 600. You will not be able to use this on most modern computers except at the lowest resolution setting for the PC.

SOURCE: How to connect the Optoma Pico PK-101 DLP to a laptop

You have to buy a 17€ converter.... here on my website, is a diagramm on the B chapter that explain a lot.
http://shadar.spacequadrat.de/?p=121#more-121

Here is the link to buy one converter
http://shop.ebay.fr/i.html?_nkw=pc+VGA+to+converter&_sacat=0&defsort=15&LH_BIN=1&_sop=15&_odkw=pc+to+converter&_osacat=0&bkBtn=&LH_ClassifyToggle=0&_trksid=p3286.m270.l1313

SOURCE: Connecting Pico projector to a Laptop...

sorry dude the usb is for charging only you need to buy a vga to composite cable and a male to male component cord both purchaseable from this web site http://www.bestofferbuy.com

SOURCE: we are using windows 7

Probably FN and F5 key or whichever key controls your display routing.