Comparing two sets of data

Hi,

Im having some problems comparing data. Ive had a look about the net but I cant seem to find what im looking for.

Basicall I have two sets of data, one being 1700 cells long and the other around 5000. The second set of data also has an cash amount in the column next to it, so what I need is to be left with only the 1700 from the first list with the corrosponding cash value from the collumn.

Ive got an example below:

First Set of data
269 803 425
274 524 032
273 725 580
273 486 886
273 191 015
273 758 540
273 435 610
273 499 038
269 603 072

Second Set of data Amount
255 097 339 £83.69
269 524 032 £83.69
269 803 425 £83.69
255 094 856 £83.69
255 094 815 £83.69
255 094 773 £83.69
255 095 101 £83.69
257 811 562 £10.00
255 271 801 £91.00
257 818 559 £91.00
257 818 591 £10.00
255 195 109 £10.00
255 194 953 £10.00
255 194 912 £10.00
255 194 565 £106.81
255 174 427 £10.00
255 134 595 -£15.98
255 093 684 -£15.98
255 216 491 £43.50
255 216 368 £10.00
255 221 657 £43.50


In this case i would be left with only:

269 803 425 £83.69

Any help would be great.

Thanks,
Ross.