USB cable length limitations

I've heard (and read) that USB cables cannot be over 15 feet in length; if it is, the device on the other end will not be able to 'push' the signal. Is this true? I need to run about 35 feet of USB cable. Is there some kind of powered "repeater" I could use? Maybe put one at the 12 foot point, and another at the 25 foot mark. Any ideas will be appreciated. This isn't for a printer so a wireless print server won't work, unless I can use other USB devices in a wireless print server. I don't think I can though. If I could, they'd call them 'wireless USB device thingamajigs'. Any ideas from the geniuses (or is it genii?) here at MG will be appreciated. Thanks.

PS- I'm pretty sure that 'thingamajig' is a technical term.

 

See if this will help you out dlb
http://www.usb.org/about/faq/ans5
Powered hub.

And the correct term is whatyamacallit.

 

Look here
http://www.usbgear.com/USB-Extenders.html

 

Thanks for the links. Both were very informative and answered my question.

Ahhhh... the ol' whatyamacallit.... I get my tech terms mixed up.