Navratilova was part of the US team that beat Slovenia in April

The 47-year-old, who failed to add to her 20 titles at SW19 this year, will partner Lisa Raymond in the doubles.

In the other quarter-finals, a strong Russia squad travels to Argentina, while defending champions France must visit Italy.

Belgium will be without Kim Clijsters and Justine Henin-Hardenne in Spain.

We've become very close as a team Martina Navratilova

With Anastasia Myskina, Svetlana Kuznetsova, Vera Zvonareva and Elena Likhovtseva, last year's runners-up Russia look set to progress on the clay of Buenos Aires.

Such is the strength of the squad that Wimbledon champion Maria Sharapova is not required.

"We decided against inviting Sharapova because it would have been difficult for her to adapt to clay from grass in such a short time," said team captain and Russian Tennis Federation president Shamil Tarpischev.

Navratilova was keen to stand up for a USA squad that lacks the Williams sisters, Jennifer Capriati and Lindsay Davenport, with Raymond and Chanda Rubin playing singles.

"We're getting all this negative reporting about who isn't here," said Navratilova.

"We've become very close as a team. We go out together. We're determined to win."