just wanted to ask u guys is it difficult to find part time jobs for international students ? as i will attend a college and need my to work out with my rent and utilities .. so is it really difficult to find part time jobs ?

Most likely, yes.  It will be difficult to get a job.  You will need a Work Permit and there are some costs involved.  The application costs 1000 euro.  It can take up to a month for the Department of Jobs Enterprise and Innovation to process.  Also, you need to have a job offer before you can apply for a Green Card/Work Permit.  Ireland is more friendly to EU citizens seeking employment, (i.e. you're from France, Poland, Sweden, etc.)

For more information about working in Ireland, visit the DJEI web site:  http://www.djei.ie/