You should get a letter, or already have documentation naming your 401K service plan provider. The provider should send you a letter, informing of you of your options (Rollover IRA, etc.)
You can find information on ING's 401k plan at www.ingretirementplans.com.
i lost track of my 401k in 1997 and dont know the company that had the 401k plan
you can see 401k details in "401(k)help center".....
One website where you can find some of the pros and cons for the 401k calculator tax is: http://www.401kplanning.org/calculators-tools/401k-savings-calculator/
Contact the brokerage house where the 401K was and ask for a distribution or rollover. The 401K is not owned by the business, it is yours - just call the company that is listed as the retirement plan manager.
There are many places where someone could find advice on choosing a 401K plan. Websites such as, edwardjones, smart401K, and marketwatch, all have information and advice on choosing a 401K plan.
There are many places where someone can find more information about the 401k plan. The best place to find more information about the plan is at the Department of Labour.
Your employer should have their records electronically stored. The 401K is usually with a separate company anyhow. You will need to find out who sponsors your 401k and their contact information. Your employer will have access to this.
A simple 401k calculator can be found on this site and is easy to use. Just insert your information and plaaning. http://www.bloomberg.com/personal-finance/calculators/401k/
To find your 401k account registered under your name, contact your employer's human resources department or the financial institution managing your 401k plan. Provide your personal information and they can assist you in locating your account.
Your 401k's were held by a bank or financial institution and any information about who held them will be useful in your search on the internet.
One might find detailed information as to a Roth IRA vs a 401k at Schwab's website. Schwab offers a lot of pros and cons of having either a 401k or a Roth IRA.