Vlookup and data validation I think thats what i need not sure any help would be great

Good afternoon everyone

I have been working on this sheet for about a month and so far its working
now I have found that there have been a lot of changes and now the simple vlookup does not do the trick I need it to do

I have drivers that come to our warehouse

and I have set it up so when I type in there rego in to Row S
=IFERROR(VLOOKUP(S23,Drivers!A:C,2,FALSE),"") drivers name
=IFERROR(VLOOKUP(S23,Drivers!A:C,3,FALSE),"") drivers phone number

S23 starts at S2 and goes to S62 only 1 needs to be fixed and I just use the same code for each other truck

fills it self out from drivers sheet in side the work book

there are now over 380 drivers names with regos

and now a few of the drivers are changing trucks regos

so now when I driver turns up with a rego already in the sheet it shows the first person on the list

every 3 days I update the sheet with new drivers where there regos are not in the sheet or if there a different name on there so I have records

I would like a way so that when i type in a rego if there is more then 1 person with a match rego

a list will pop up with the names of the drives that have the same matching rego so I can click the right name and then phone number will also change

I have to use the rego as the point cause we have over 50 trucks a day come on site the rego is how our warehouses nows which truck to load up other wise using a mobile number would be the easiest way

I tried to use the build in file uploader and did not work so upload to http://www.filedropper.com/10817


I have spent a few hours looking up youtube and nothing that I can fix will fix this problem and I'm not even sure excel would be able to do this

any help would be Great

JustinwB