Want to buy some shares today... what do i do?

[amidaiwish]

So, have decided to invest £2k in a telecoms company i think looks undervalued.
How do I go about buying the shares with lowest fees?
TIA

have had a look about, we haven't used our ISA allowance so it seems sensible to open a stocks & shares self select ISA.
does anyone know if you can select any stock you like for these? Most of them seem to be that you choose between their funds?

Depends on the Isa provider. How have you decided that it is undervalued? It's hard to make that sort if call accurately.

Yes you can open a stocks and shares ISA which will allow self select. However, look carefully at the charges. If this is going to be your only stock then the ISA wrap may not be the best way forward. Alliance Trust savings run a pretty good ISA scheme.