OneMain picks Rocklin as its hub.(OneMain.com Inc to build a data hub in Rocklin, California)

For the past few months, Brad Jenkins has had a little bit more spare time on his hands running JPSnet.

But not much.

Already the pace has begun to quicken for Sacramento's largest Internet service provider, which rolled its fortunes up with 17 other small-market ISPs in March.

Together they formed OneMain.corn Inc. in a $215 million initial public offering, with JPSnet as the largest unit.

Now, OneMain has picked Jenkins' back yard - Rocklin - for its West Coast data hub.

In July, Jenkins moved his 206 employees into a 25,000-square-foot building in Stanford Ranch. Over the next six to 12 months, he's looking to hire 250 more people.

The back-office hub will handle accounting, billing, sales and service calls for JPSnet's customers in California and other states, as well as for two other California ISPs in the company.

Since the merger into OneMain, "it's a bit more comfortable," he says. "I don't have to worry about making payroll."

On the other hand, the pressure is on …