Excuse me ,I am using a SNPs data which come from GAW18. I want to define a "group" of SNPs as the set of SNPs lying within a known gene(i.e., between the minimum transcription start position and the maximum transcription end position, in the UCSC genome browser).

Now, the GAW18 SNPs only have their location(i.e. 3_60162, 3_60197),how can I map out which gene they belong using R and UCSC genome browser? which R package can do this? The data format is CSV and I want add one column that is write gene for each SNPs.

Thank you!