Andrew,
You've got lots to think about here.
(1) I'm guessing your wife is already a permanent resident. Should be no problem having a Roth IRA. To correct something said above: if she opts to become a US citizen, she does not automatically forfeit her British citizenship, though she would be expected to travel on a US passport (she will have to surrender her alien registration card when she is sworn in as a citizen, and a US passport is the only document that will get her back into the country). The US recently changed the law regarding dual citizenship, thereby encouraging many aliens to become naturalized. Many had resisted this move through fear of losing their original nationality. I know, by the way, because I am a recently naturalized US citizen of French/South African origin. I've jumped through all the hoops!
(2) An IRA is by definition an individual account. You can set up a spousal account for your wife (2,000 for each of you per year if you meet income requirements).
(3) and (5) Don't set up an IRA through a bank if you can avoid it, or any brokerage house that charges you a commission. The bank and broker are middlemen, salespeople, nothing more. And banks have huge overhead costs to meet, whereas many mutual fund families don't. Go for 100% no-loads, with low expense ratios. Most reputable fund families will have websites and 800 numbers, and offer a wide variety of funds without commissions. Many will answer technical questions on retirement planning, and procedures for setting up accounts. Forms can be downloaded from the Internet. I highly recommend the Vanguard Group, which tries very hard to keep costs down for investors (www.vanguard.com).
If you seek advice from an independent financial planner, it's best not to deal with one who sells investment products, because there's an inherent conflict of interest. This person will steer you towards the products he or she gets a commission on.
(4) CGC has given you lots to think about. Sounds like you are a novice investor. I highly recommend that you read "MUTUAL FUNDS FOR DUMMIES" before making any investment choices. You never choose stocks or a mutual fund before figuring out what your investment horizon is, what your risk tolerance is, what tax bracket you expect to be in, and so on. Once you know what your goals are, you work out your asset allocation (mix of stocks, bonds and cash in certain percentages) and choose your mutual funds accordingly. This allocation should take account of ALL your investments (your 401(k) or other employer plan), not just your IRAs. Don't trade in individual stocks until you know what you are doing. Find a balanced mutual fund (asset allocation is determined for you) or a judicious mix of about four mutual funds that achieve the balance you are looking for.
If you need to set up a Roth account right away to meet the April 14 deadline, park the funds in a money market account (eg Vanguard's Prime Money Market Fund) while you figure out what your asset allocation should be. Then you can start to shift it into the mutual funds of your choice. You can trade these at any time, but be aware that some mutual funds have a minimum initial investment threshold.
(6) Yes, this business is complicated, and I'm one of many still figuring things out, with questions of my own. Do your homework. Read Mutual Funds for Dummies, check out the www.rothira.com website, read a variety of posts that come up on this message board, and for basic investment issues, why not subscribe to Morningstar's BBS at
http://www.morningstar.net/nd/ndNSAPI.nd/B...umId=F100000002 -- it's free. There is another forum on Morningstar dealing specifically with Vanguard funds. It's a popular forum with lots of experienced people contributing to it. Find it by clicking on "other forums".
Good luck
Lyric