Washington ? Antiwar protesters traded marching shoes for phones, fax machines and computers Wednesday as part of a “virtual march” on the nation’s capital.

Senators, regardless of their position on a war with Iraq, were barraged with calls, as was the White House. Outside calls to Democratic and Republican Senate offices could not be completed because of busy circuits.

“We will let our fingers do the marching and demand that our voices be heard,” said Tom Andrews, the national director for Win Without War, the group that organized the protest.

Andrews said about 400,000 people had registered through the group’s Web site for the call-in campaign.

White House spokeswoman Ashley Snee said the switchboard received “a lot of calls” Wednesday, though she didn’t have figures.