EXHIBIT 23.7 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the use in this Registration Statement on Form S-1 of our report dated July 14, 1999 relating to the financial statements of U-Net Ltd., which appears in such Registration Statement. We also consent to the reference to us under the heading "Experts" in such Registration Statement. /s/ PricewaterhouseCoopers PricewaterhouseCoopers Manchester, UK February 3, 2000