Time Capsule-esque External Drive for Windows?

Is there an external hard drive that can sync wirelessly with a Windows PC? I'm looking for something like Apple's Time Capsule for Mac, which routinely syncs a laptop's files with the external drive when the computer is in range, because for some reason I'm really bad at remembering to back up my data. Running a server or renting online storage just don't seem like particularly cost-effective solutions. Alternatively, is there some method by which a regular drive can be modified (inexpensively) to move data over the cloud? What options do I have? Any help or advice would be much appreciated!

Edit: found these
http://www.walmart.com/ip/Lacie-Wir...ci_src=17588969&ci_sku=15268495#ProductDetail
http://store.westerndigital.com/sto...tegory.52233400/parid.13092300/catid.13092900
Anyone know if/how they work?

Edit 2: http://go.iomega.com/en-us/products...ive-iconnect/?partner=4760#tech_specsItem_tab Possible? I already have a regular external HDD.

 

Windows Home Server, WHS, works like that. Look for a NAS drive that has WHS as an operating system.

Some examples you can see at MS website: Buy Windows Home Server Acer EasyStore HP MediaSmart Server Velocity Micro's NetMagix HomeServer and there's more now that you know what to look for.

 

WHS is a heckuva lot better than Time Crapsule in that it really 'just works'. It's criminally underrated by the Apple-addled morons in the tech press because it's not sold in the way that these simpletons understand.

 

Thanks, I hadn't even heard about WHS! Can anyone recommend an inexpensive product? I will probably only need to back up a single PC, so a single 3.5" bay would be sufficient, and I'd rather not spend $400+ when $100-$200 will do.

 

If it's only a single PC, then why not use the built-in backup in Windows 7 onto a USB drive? Granted it's not wireless but it's going to be fairly quick.