look for microfibre cloths. On the label look for the word "polyamide". I soak one with water, wring it out, wipe off the device, and use a dry one to remove residual moisture. Any soft lint free cloth should do it though.
There are no stupid questions, only a whole lot of inquisitive idiots.
Stupidity should be painful.
Wallaby WM2003SE -- RIP
SX66 -WM2003SE Tmo UK, Camera Upgrade (yay) - sold
HTC Uni, WM5 (Thx Swat4) - sold
HD2 - stolen by thieving bass tards
G1 - upgraded to Cyanogenmod 6.1 = awesome