Writing XPATH Queries

[ajayvaram]

Hi all,
Im facing to write some XPATHs,
My XML file as like as bellow..
<Plan...>
.....
- <InvestmentAcco unt Id="InvestmentA ccount01" Type="Post97Non PR"
InvestmentStrat egyId="Investme ntStrategy01">
- <Contribution Id=0 Source="Employe e"
EscalationBasis ="FixedCompound Pct"
EscalationPct=" 0.0" Frequency="12" ExistingOrNew=" Existing"
NextDueDate="20 04-09-15"
ParameterOverri deIds="Paramete rOverride01">
- <ContributionLa yer Id=0 StartDate="2002-01-15"
FMCStartDate="2 002-01-15">
<ContributionEl ement Amount="150" PremsPaidToDate ="28"
Status="InForce " />
<Investment FundName="66E RWP" FundValue="1200 0" />
</ContributionLay er>
</Contribution>
</InvestmentAccou nt>
- <InvestmentAcco unt Id="InvestmentA ccount02" Type="Post97Non PR"
InvestmentStrat egyId="Investme ntStrategy02">
- <Contribution Id=1 Source="Employe r"
EscalationBasis ="FixedCompound Cop"
EscalationPct=" 0.0" Frequency="13" ExistingOrNew=" Existing"
NextDueDate="20 04-09-15"
ParameterOverri deIds="Paramete rOverride01">
- <ContributionLa yer Id=1 StartDate="2002-01-15"
FMCStartDate="2 002-01-15">
<ContributionEl ement Amount="150" PremsPaidToDate ="28"
Status="InForce " />
<Investment FundName="66E RWP" FundValue="1200 0" />
</ContributionLay er>
</Contribution>
</InvestmentAccou nt>
<InvestmentAcco unt Id="InvestmentA ccount02" Type="VhvbggNon PC"
InvestmentStrat egyId="Investme ntStrategy03">
- <Contribution Id=2 Source="Employe r"
EscalationBasis ="FixedCompound Cop"
EscalationPct=" 0.0" Frequency="13" ExistingOrNew=" Existing"
NextDueDate="20 04-09-15"
ParameterOverri deIds="Paramete rOverride01">
- <ContributionLa yer Id=2 StartDate="2002-01-15"
FMCStartDate="2 002-01-15">
<ContributionEl ement Amount="150" PremsPaidToDate ="28"
Status="InForce " />
<Investment FundName="66E RWP" FundValue="1200 0" />
</ContributionLay er>
</Contribution>
</InvestmentAccou nt>
......
</plan>

Plz check the xml file carefully,
because Same named Elements are repeted more than 2 times( In my xml it posible more than 2 also)

1) Here i need XPath Query To find "InvestmentAcco unt.Id" for follwing condition

InvestmentAccou nt.Id Where InvestmentAccou nt.Type="Post97 NonPR" and Contribution.So urce= "Employer "

2) To find ContributionLay er.StartDate for following condition

ContributionLay er.StartDate where Contribution.Id =ContributionLa yer.Id and
ContributionLay er.FMCStartDate ="2002-01-15" and
Contribution.Ne xtDueDate="2004-09-15"

Here ContributionLay er & Contribution are Same level Elements under
InvestmentAccou nt Node

Plz Send me XPath Query

....Ajay