As Lynn said you didn't provide much to go on but an extremely vague shadow of an idea. I think that the gist of your question is "How can I pass an array in SQL 2005?". Short answer, you can't. You can however do some things to work around it. In 2008 they introduced table parameters which is awesome but in 2005 you don't have this.
What you can do is pass in a delimited string of primary key values. Then use the concepts discussed in the article in my footer about splitting strings to parse it out.
If need a more detailed explanation your are going to have to provide a more detailed question.
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Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.
Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/