You can transfer the desired hstore key/value data to new columns:  
1-Create the desired columns (ex. addres, city, key1, key2, keyn)  
2-Run:  

    UPDATE table 
    SET 
    address=hstorecolumn->'address',
    city=hstorecolumn->'city',
    key1=hstorecolumn->'key1',
    key2=hstorecolumn->'key2',
    keyn=hstorecolumn->'keyn';

Or you can simply get used to hstore, it works pretty well and I have so many good results with it that I can say IMO "hstore changed my life". lol

EDIT:  
An example on how to use hstore:  
`
 SELECT  
   streetdatatable.hstoredatacolumn -> 'address',  
   streetdatatable.hstoredatacolumn -> 'city'  
 FROM someschema. streetdatatable`

It will show you all the address and cities values.