OK - you need to find what type of card your motherboard supports- is it AGP or PCI? AGP is a brown slot, whilst PCI is white. If you open up your case, then you can look and find out.
I am presuming that you have onboard graphics with the Dell?
WPA2 hack: How secure is your Wi-Fi?
Add Depth Of Field to a photo using Tilt Shift Blur in Photoshop
iPhone tips & tricks
Les meilleures tablettes 2017