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How to delete "" from csv values in R and how to change column Names when writing to a CSV with R

Submitted by Sanshine on June 27, 2012

I`m trying to create csv files out of an R table. But i cant understand why all the values get
checked with "" when i use the write.csv() function. my data looks like this:

        Sample  Sample_Name Sample_Group    Pool_ID Sample_Plate    NorTum  Sentrix_ID    Sentrix_Position  HybNR
    1   00_11242    00_24200N2  MUTYH   GS0005703-OPA   GS0010004-DNA   N     1280307   R007_C005   1
    2   00_11242    00_24200N2  MUTYH   GS0005704-OPA   GS0010004-DNA   N   1280307 R007_C011   1
    3   00_11242    00_24200N2  MUTYH   GS0005702-OPA   GS0010004-DNA   N   1416198 R007_C011   2
    4   00_11242    00_24200N2  MUTYH   GS0005701-OPA   GS0010004-DNA   N   1416198 R007_C005   2
    5   00_7    00_7T   MUTYH   GS0005701-OPA   GS0010004-DNA   T   1416198 R006_C005   2
    6   00_7    00_7T   MUTYH   GS0005702-OPA   GS0010004-DNA   T   1416198 R006_C011   2
    7   00_7    00_7T   MUTYH   GS0005704-OPA   GS0010004-DNA   T   1280307 R006_C011   1
    8   00_7    00_7T   MUTYH   GS0005703-OPA   GS0010004-DNA   T   1280307 R006_C005   1
    9   01_677  01_677N HNPCC_UV    GS0005701-OPA   GS0010004-DNA   N   1416198 R002_C006   2
    10  01_677  01_677N HNPCC_UV    GS0005704-OPA   GS0010004-DNA   N   1280307

And in the output file which is a CSV every value looks like this:

"100" "R05_80611" "R05_80611N" "NA_FAM" "GS0005701-OPA" "GS0010004-DNA" "N" 1416198 "R003_C006" 2

Why is the function putting quotes around my values and is there a way to quickly do this.
Im also wondering how i can change my column names when writing to CSV files but since im a starter i`ve no clue on how to do this.

Thanks in advance!

Grts Sander