Wall Street hopes for more Fed action and clear signs European leaders will follow through on their new urgency to tackle the euro zone debt crisis if U.S. stocks are to build on their best week since early July.

Investors expect the Federal Reserve to take steps to pull down long-term interest rates when policymakers meet on Tuesday and Wednesday to help revive the persistently weak U.S. economy.

Fed Chairman Ben Bernanke, speaking in Jackson Hole, Wyoming, on August 26, said the Fed's Open Market Committee would meet for two days in September instead of the scheduled one day to discuss ways to boost the recovery.

But even with expectations of more intervention to boost the economy, investors will keep a close eye on developments in Europe.

The Standard & Poor's 500 index <.SPX> posted a 5.4 percent gain last week, its best since early July. The Nasdaq composite index <.IXIC> gained 6.3 percent for the week while the Dow Jones industrial average <.DJI> rose 4.7 percent

Any lack of progress or backsliding on efforts to get the currency bloc's fiscal house in order will renew worries the crisis could seriously damage the world financial system and major economies.

The Fed is really going to dominate next week, said Paul Mendelsohn, chief investment strategist at Windham Financial Services in Charlotte, Vermont.

But the market has been trying to work its way higher here, trying to feel if maybe the European thing won't cascade out of control.

Treasury Secretary Timothy Geithner, at a meeting of euro zone finance ministers in Poland on Friday, urged them to leverage their bailout fund to better tackle the debt crisis, but there was no agreement on what steps to take.

While the Standard & Poor's 500 <.SPX> has been moving upward over the past week, the benchmark index has been stuck in roughly a 100-point range over the last six weeks.

It is likely to run into resistance near the 50-day moving average of about 1,228, with analysts also pointing to the 1,250 level as the next significant hurdle.

This is really a consolidation phase, which is normal after the kind of early August swoon that we had. So far this trading range is developing in a very positive and healthy way, said Gail Dudack, chief investment strategist at Dudack Research Group in New York.

Longer term, the market is looking better but we are getting very close to that resistance at 1,250, which would be pretty surprising if we can break above that at this early juncture. It could take a little more time, people shouldn't be disappointed.

This week's economic calendar includes reports on the beleaguered housing market along with weekly initial jobless benefits claims.

Housing is dead and it will stay dead, and I don't expect anything out of unemployment either, said Joe Saluzzi, co-manager of trading at Themis Trading in Chatham, New Jersey. The biggest event is Bernanke.

Companies due to post earnings this week include homebuilder Lennar Corp , Nike Inc , General Mills Inc as well as technology companies Adobe Systems , Red Hat Inc and Oracle Corp .

FedEx Corp , the No. 2 U.S. package delivery company, which is seen as a proxy for how the economy is performing, is also scheduled to report quarterly results.

Though earnings have managed to hold up in the face of a lackluster recovery, analysts worry this might not last if the financial system suffered the shock of a Greek debt default.

But while many feel Bernanke has telegraphed the plans for the Fed meeting, the euro zone debt crisis remains an uncertainty that could knock the market lower.

It's absolutely the wild card because Europe's problems may be similar to what we saw in 2008, but they are much more difficult to deal with because country debt is far more difficult to deal with than mortgage debt, Dudack said.

She added that having so many countries that are part of a committee trying to solve the problem only added to the complications.

(Reporting by Chuck Mikolajczak; Editing by Kenneth Barry)

Poland Timothy geithner Ben Bernanke