Why are you doing this? In theory I suppose it is possible to run a sort of webserver but not very practical.
For a start your IP is dynamic (unless you pay business rate for a fixed one) so it might change today, tommorrow, next month. You just don't know so you wouldn't be able to point a web address to it either.
In any case your upload speed (i.e. download speed as would be seen by your visitors) is only about a tenth of your broadband d/l speed. Depending on what is on the site and how many people are going to access it at any one time means it could be very slow and it will all contribute towards your bandwidth usage allowance.
A proper full featured web hosting/domain package would be far better considering how ridiculously cheap it is these days. I use I-websolutions and i think they still have a special deal for cable forum nthellworld members (cheaper than a cheap night out - for the whole year's hosting costs
).