Hi, I was just wondering if it is ok that the end of my network card (in the first PCE-E slot), is touching I think the heatpipe going through my motherboard. If it is wondering if I should put something inbetween like rubber or paper or something. The heatpipe looks like it is made of copper.
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Nah, you'll be ok. No harm to be feared. The heat that heatpipe will transfer should never be enough to cause damage. I wouldn't fret over it.
Heat shouldn't be a problem. By all means if it makes you feel better just put some electrical tape over the edge of the card.
Everything that goes wrong in the world can be fixed by either duct tape or WD-40: If it's not moving and it's supposed to, WD-40 it; if it's moving and it's not supposed to, duct tape it!