Arranging a wedding can be a headache. But a growing number of Web sites are helping to ease the pain by letting couples plan their weddings online. Wedding Web sites allow the bride and groom to post event details, maps and directions; biographies about the couple and wedding party, and links to hotels and gift registries. They also let guests RSVP and vote in customized polls to pick the first song the couple will dance to or which drink to serve at the reception.

The sites offer contracts (for a fee) that can go as long as a year, but JoAnn Gregoli, a New York-based wedding planner, says it’s best to opt for monthly contracts. “You don’t want to sign a year contract for a wedding in six months,” she says.

Weddingwindow.com offers monthly deals for $10.99. Couples can upload unlimited photos and use extensive planning tools, which include a vendor manager and gift and budget trackers.

For $79 for six months, wedshare.com provides planning tools, including a seating chart, and allows you to upload unlimited video.

Myevent.com charges $9.95 per month. It has a gift-return and exchange man- ager and includes an archival CD of the Web site.

For the few not yet connected to the Net, you can always print out the pages and send them via snail mail. But some in the industry believe it’s only a matter of time before weddings go completely paperless. “We’re in the era of Facebook and MySpace,” Gregoli says. “Within five years, wedding Web sites are going to be the only thing used.”